2010 Mack Gu TSBs
206 Technical Service Bulletins across 14 categories
Categories
Engine
53 bulletinsCBR: For vehicles equipped with an 11L engine, the plastic saddle bracket holding the a/c line on the left side of the...
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engine may move excessively and rub the area where it secures the line.
Barksdale Leveling Valve, Leak Test
2009 Document reformatted to be published as a TSB in Impact.
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Turbo Actuator Connector Repair.
2008 document reformated to be published as a TSB in Impact.
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All CXU, CHU, GU, MRU's built with Volvo Engines and 07 Emissions. Cleaning Aftertreatment Fuel Injectors.
Programming Failure - Chassis With Cummins Engine And An Allison Transmission
US10 Emission Engines - Diagnostic Trouble Code ( DTC ) SPN 1231 FMI 9 Troubleshooting.
Vehicles Equipped With An Automated Manual Transmission Model D or F ( AMT-D, AMT-F ) - Transmission Oil Leakage From...
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Transmission Input Shaft Seal Or Output Shaft Seal - US10 And Newer Emissions, Common Model Years 2010 And Newer.
Emcon (Spark Assist) Engine Aftertreatment System Troubleshooting Check Sheet - US07 Emissions
Low Oil Pressure Diagnostic Process For 11 Liter Engines
Manual Compression Test Adapter For Engines With Stainless Steel Injector Sleeves (Conical Tip Injectors) - US07 And...
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Newer Emissions, Model Year 2008 And Newer
Mack Chassis - Diagnostic Trouble Codes ( DTC's ) - P020113, P020213, P020313, P020413, P020513, P020613, Cylinders 1...
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Through 6 Injector A Open Circuit
Mack Chassis - Equipped With An Automated Manual Transmission Model D or F (mDrive, AMT-D, AMT-F) - Transmission Oil...
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Leakage From Transmission Input Shaft Seal Or Output Shaft Seal - US10 And Newer Emissions, Common Model Years 2010 And Newer
Engine Oil Analysis Specifications - US10 And Newer Emissions
US07 / US10 D13 Turbocharger Gasket - Low Power, Poor Regen Performance
On some MACK CHU, CXU, GU, and TD truck models built between 04/31/2008 and 11/30/2015, the solenoid valve for the grade...
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gripper feature is prone to internal contamination in harsh environments. The internal contamination of the solenoid valve is caused by the buildup of grime, salt, road debris and other solid contaminants. In some cases, the buildup of solid contaminants caused the solenoid valve to malfunction. A similar malfunction is possible if the solenoid valve is equipped with a vent fitting that freezes over. The malfunction causes the trailer brake circuit to maintain trailer brake pressure after a grade gripper event. Replacement of the existing solenoid valve, elbow, and the addition of a new tube fitting and tube will ensure proper functionality of the grade gripper feature.
Reman Engine Label Replacement
Assembled Camshaft - Injector Lobe Rotation Inspection For Possible Spun Camshaft Lobe; Diagnostic Trouble Codes (DTC)...
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P0257-00, P2A17-00, Or P2A1F-00, Possible Lack Of Power - US17+OBD16 and Newer Emissions
Mack Chassis - Equipped With An Automated Manual Transmission Model D or F ( mDrive, AMT-D, AMT-F ) - Transmission Oil...
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Leakage From Transmission Input Shaft Seal Or Output Shaft Seal - US10 And Newer Emissions, Common Model Years 2010 And Newer
Fuel Injector Offset Learning Diagnostic Trouble Codes ( DTC ) / Fault Codes Logged In Engine Control Module ( EMS );...
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Possible Rough / Uneven Idle - OBD15 Chassis
Automated Manual Transmission ( AMT - F ) ( mDRIVE ) Clutch Valve Unit ( CVU ) Makes Intermittent Buzzing Noise With The...
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Key On And Engine Off.Changed repair information to reflect new software available.
Engine Diagnostic Trouble Codes ( DTC's ) P24A0 And P249F Lighting The Malfunction Indicator Lamp ( MIL ) - OBD15...
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(Commonly Model Year 2016) And Newer.Updated to reflect release of FSB284-064 (Above)
MACK CHU, CXU, GR, GU, and PI trucks built from 2009 to 2017 and equipped with MP7, MP8, and MP10 engines (EM-USA10,...
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EM-USA14, and EM-USA17), will require a new torque specification for the Unit Injector Yoke Hold-Down Bolt. Effective immediately, the torque value in step 4 has changed to 25 +5/-0 Nm (18 +4/-0 ft-lb).
MACK CHU, CXU, GR, GU, and PI trucks built from 2009 to 2017 and equipped with MP7, MP8, and MP10 engines (EM-USA10,...
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EM-USA14, and EM-USA17), will require a new torque specification for the Unit Injector Yoke Hold-Down Bolt.
IN SOME INSTANCES THE EXHAUST ROCKER PISTON CAP SCREW MAY BECOME LOOSE AND BACK OUT CAUSING LOSS OF ENGINE COMPRESSION,...
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OR A MECHANICAL INJECTOR DIAGNOSTIC TROUBLE CODE (DTC).
SOME MACK VEHICLES BUILT BETWEEN 2004 AND OCTOBER 2013 EXPERIENCE AN OIL LEVEL SENSOR FAILURE THAT LEADS TO OIL...
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CONTAMINATION INTO THE ENGINE WIRE HARNESS.
SOME MACK VEHICLES BUILT BETWEEN 2004 AND OCTOBER 2013 EXPERIENCE AN OIL LEVEL SENSOR FAILURE THAT LEADS TO OIL...
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CONTAMINATION INTO THE ENGINE WIRE HARNESS.
ON CERTAIN MACK CHU, CXU, GU, AND TD TRUCKS BUILT BETWEEN 07/06/2009 THROUGH 09/26/2014, EQUIPPED WITH ENGINE START...
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CONDITION, CLUTCH PEDAL FULLY DEPRESSED FEATURE AND HAS A RELAY CENTER ELECTRONIC POWER DISTRIBUTION MODULE (EPDM) GASKET (PART NUMBER 82732384) INSTALLED, MAY EXPERIENCE INTERFERENCE BETWEEN THE CLUTCH PEDAL MICRO SWITCH AND EPDM GASKET.
GRADE GRIPPER SOLENOID, REPLACEMENT.
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ON SOME MACK CHU, CXU, GU, AND TD TRUCK MODELS BUILT BETWEEN 04/31/2008 AND 11/30/2015, THE SOLENOID VALVE FOR THE GRADE GRIPPER FEATURE IS PRONE TO INTERNAL CONTAMINATION IN HARSH ENVIRONMENTS. THE INTERNAL CONTAMINATION OF THE SOLENOID VALVE IS CAUSED BY THE BUILDUP OF GRIME, SALT, ROAD DEBRIS AND OTHER SOLID CONTAMINANTS. IN SOME CASES, THE BUILDUP OF SOLID CONTAMINANTS CAUSED THE SOLENOID VALVE TO MALFUNCTION. A SIMILAR MALFUNCTION IS POSSIBLE IF THE SOLENOID VALVE IS EQUIPPED WITH A VENT FITTING THAT FREEZES OVER. THE MALFUNCTION CAUSES THE TRAILER BRAKE CIRCUIT TO MAINTAIN TRAILER BRAKE PRESSURE AFTER A GRADE GRIPPER EVENT.
SOME MACK VEHICLES WITH MP ENGINES BUILT BETWEEN JANUARY 2004 AND JANUARY 2013 MAY EXPERIENCE A MAIN OIL GALLERY...
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PRESSURE SENSOR OR PISTON COOLING JET PRESSURE SENSOR FAILURE THAT LEADS TO OIL CONTAMINATION INTO THE ENGINE WIRE HARNESS.
"GRADE GRIPPER SOLENOID, REPLACEMENT.
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ON SOME MACK CHU, CXU, GU, AND TD TRUCK MODELS BUILT BETWEEN 04/31/2008 AND 05/12/2014, THE SOLENOID VALVE FOR THE GRADE GRIPPER FEATURE IS PRONE TO INTERNAL CONTAMINATION IN HARSH ENVIRONMENTS. THE INTERNAL CONTAMINATION OF THE SOLENOID VALVE IS CAUSED BY THE BUILDUP OF GRIME, SALT, ROAD DEBRIS AND OTHER SOLID CONTAMINANTS. IN SOME CASES, THE BUILD-UP OF SOLID CONTAMINANTS CAUSED THE SOLENOID VALVE TO MALFUNCTION. THE MALFUNCTION CAUSES THE TRAILER BRAKE CIRCUIT TO MAINTAIN TRAILER BRAKE PRESSURE AFTER A GRADE GRIPPER EVENT. REPLACEMENT OF THE EXISTING SOLENOID VALVE, ELBOW, AND THE ADDITION OF A NEW VENT WILL ENSURE PROPER FUNCTIONALITY OF THE GRADE GRIPPER FEATURE. "
ON SOME MACK CHU, CXU, GU, AND TD TRUCK MODELS BUILT BETWEEN 04/31/2008 AND 05/12/2014, THE SOLENOID VALVE FOR THE GRADE...
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GRIPPER FEATURE IS PRONE TO INTERNAL CONTAMINATION IN HARSH ENVIRONMENTS. THE INTERNAL CONTAMINATION OF THE SOLENOID VALVE IS CAUSED BY THE BUILDUP OF GRIME, SALT, ROAD DEBRIS AND OTHER SOLID CONTAMINANTS. IN SOME CASES, THE BUILD-UP OF SOLID CONTAMINANTS CAUSED THE SOLENOID VALVE TO MALFUNCTION. THE MALFUNCTION CAUSES THE TRAILER BRAKE CIRCUIT TO MAINTAIN TRAILER BRAKE PRESSURE AFTER A GRADE GRIPPER EVENT.
GRADE GRIPPER SOLENOID, REPLACEMENT.
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ON SOME MACK CHU, CXU, GU, AND TD TRUCK MODELS BUILT BETWEEN 04/31/2008 AND 05/11/2015, THE SOLENOID VALVE FOR THE GRADE GRIPPER FEATURE IS PRONE TO INTERNAL CONTAMINATION IN HARSH ENVIRONMENTS.
GRADE GRIPPER QUICK RELEASE VALVE, REPLACEMENT.
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ON SOME MACK CHU, CXU, AND GU TRUCKS BUILT BETWEEN 04/31/2008 AND 01/05/2015, AND EQUIPPED WITH THE GRADE GRIPPER FUNCTION MAY EXPERIENCE A SLOW RELEASE OF THE TRAILERS SERVICE BRAKES. ADDITIONALLY, A DELAY IN THE RELEASE OF THE GRADE GRIPPER FUNCTION MAY BE CAUSED BY CERTAIN TRUCK OPTIONS AND TRAILER COMBINATIONS USED BY THE OPERATOR.
MACK TRUCK: DUE TO OIL CONTAMINATION INTO ENGINE WIRE HARNESS, MAIN OIL GALLERY PRESSURE SENSOR OR PISTON COOLING JET...
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PRESSURE SENSOR HAS FAILED AND NEW ANTI WICKING JUMPER HARNESS IS AVAILABLE TO STOP OIL FROM WICKING BACK AND CAUSING DAMAGE TO NEW SENSOR. MODEL CHU, CXU, GU, LEU, MRU, TD. *PE
MACK: ON SOME TRUCKS, OIL CONTAMINATION INTO ENGINE WIRE HARNESS, MAY BE FROM OIL LEVEL SENSOR FAILURE AND AN ANTI...
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WICKING PIGTAIL SPLICE KIT IS AVAILABLE. MODEL CHU, CXU, GU, LEU, MRU, TD. NO YEARS LISTED. *PE
MACK TRUCKS:DUE TO EXCESSIVE MOISTURE IN THE CLIMATE UNIT, SOME VEHICLES MAY DEVELOP A BLOWER MOTOR FAILURE.
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*JS
MACK TRUCK: REGARDING THE BREAKING OR CRACKING, AT STARTER SOLENOID STUD, OF 90 DEGREE POSITIVE BATTERY CABLE LUG; THE...
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LUG WAS BENT AT TIME OF ASSEMBLY, AND ENGINE VIBRATES, CAUSING TERMINATION OF TERMINAL TO WEAKEN. MODELS CXU, GU. MODEL YEARS NOT LISTED. *PE UPDATED 1/24/2014 *JS
MACK TRUCK: INFORMATION PROVIDED REGARDING MODIFICATION OF EGR VALVE ON ENGINES AND REMOVAL OF POPPET SHAFT END CAP O RINGS.
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MODELS CHU, CXU, GU, LEU, MRU. NO MODEL YEARS LISTED. *PE
MACK TRUCKS: EGR DIFFERENTIAL PRESSURE SENSOR PIN FRETTING.
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SEVERE FRETTING DAMAGE OF THE ENGINE EXHAUST GAS RECIRCULATION DIFFERENTIAL PRESSURE SENSOR'S (EGR DIFFERENTIAL PRESSURE SENSOR) CONNECTOR MAY CAUSE AN UNRELIABLE SIGNAL TO THE SENSOR ON MACK MP8 EPA2007 ENGINES. *JS
MACK TRUCKS: ENGINE TUBOCHARGER COMPRESSOR BYPASS VALVE, AIRLINE ROUTING.
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THIS DOCUMENT COVERS THE PROCEDURE FOR ROUTING THE FLEXIBLE AIR LINE AROUND THE FRONT OF THE ENGINE IF THE EXISTING STEEL AIR LINE FAIL. *JS
MACK TRUCK: INFORMATION REGARDING THE SLEEPER CAB SUSPENSION LEVELING VALVE BRACKET THAT WAS INSTALLED INCORRECTLY.
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ALSO, THE SUPPORT BRACKET FOR AIR SPRING, INCORRECTLY MOUNTED ON FRAME, CAUSING CAB SHOCK TO EXTEND FULLY WHEN AIR SPRING IS INFLATED. *PE
MACK: DUE TO FRETTING OF CONNECTOR PINS IN ENGINE VGT ACTUATOR CONNECTOR, A NEW MOUNTING ARRANGEMENT HAS BEEN...
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DEVELOPED AND RELOCATION OF ENGINE VGT ACTUATOR CONNECTOR. MODELS CHU, CXU, GU, MRU, MP8. *PE UPDATED 7/31/12. *PE
MACK: AN UNRELIABLE SIGNAL TO ENGINE VGT ACTUATOR FROM ENGINE VARIABLE GEOMETRY TURBOCHARGER (VGT) ACTUATOR HARNESS...
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THAT HAS SEVERE FRETTING DAMAGE, THE CONNECTOR PIN AND SOCKET CONTACTS SHOULD BE REPLACED. *PE UPDATED 9/17/12. *PE
MACK TRUCKS: SEVERE FRETTING DAMAGE OF THE ENGINE VARIABLE GEOMETRY TURBOCHARGER ACTUATOR (ENGINE VGT ACTUATOR) HARNESS...
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AND TURBINE SHAFT SPEED SENSOR (TSS) CONNECTORS MAY CAUSE AN UNRELIABLE SIGNAL TO THE ENGINE VGT ACTUATOR. ALSO INCLUDED MODEL CMM AND CMH. NO MODEL YEARS GIVEN. *JS
MACK TRUCK: ON CERTAIN VEHICLES, THE AFTERTREATMENT DIESEL EXHAUST FLUID (DEF) SOLENOID VALVE WAS INCORRECTLY MOUNTED BACKWARDS.
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THIS CAUSES COOLANT TO LIFT VALVE SEAT AND FLOW CONTINUOUSLY, OVERHEATING AND POSSIBLY ILLUMINATING INDICATOR MALFUNCTIONING LIGHT. MODEL GU. *PE
MACK TRUCK: EXPANSION TANKS MAY HAVE PERSISTENT COOLANT LEAKS THAT REQUIRES INSPECTION.
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EXAMINE EXPANSION TANK FOR BURN HOLE/MARK UNDER PRESSURE CAP THAT ENABLES HOT COOLANT TO ENTER EXPANSION AREA. MODELS CHU, CXU, GU AND TD. *PE
MACK TRUCK: BETWEEN AFTERTREATMENT HYDROCARBON DOSING MODULE INITIAL DESIGN AND BOSS ON MP8 ENGINE, AN INTERFERENCE WAS DISCOVERED.
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IT PREVENTS BRACKET AND AFTERTREATMENT HYDROCARBON DOSING MODULE FROM MOUNTING FLUSH TO SURFACE OF ENGINE BLOCK. *PE
MACK TRUCKS: THERE ARE ENGINE ECM SOFTWARE UPDATES.
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*RM
MACK TRUCKS: THERE ARE FOUR MISSING BOLTS IN THE ENGINE FRAME AND MOUNT.
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*RM UPDATED ON 4/22/2013. *KB
MACK TRUCKS: THERE IS A NEW THERMOSTAT SEAL AND COVER TO PREVENT COOLANT LEAKAGE.
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*RM
MACK TRUCKS: IF THERE IS A FAILED OUTER VALVE SPRING THERE IS A REPLACEMENT PROCEDURE.
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*RM
MACK TRUCK: ENGINE ECM AND ACM SOFTWARE UPDATES.
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ENHANCEMENTS ARE AVAILABLE FOR THE ENGINE CONTROL MODULE (ECM) AND AFTERTREATMENT CONTROL MODULE (ACM). DOES NOT APPLY TO MACK TRUCKS AUSTRALIA. MODELS MRU, LEU, GU, CHU, CXU. NO MODEL YEARS LISTED. *PE
MACK TRUCK: REPLACEMENT OF THE TURBOCHARGER AND MOUNTING HARDWARE ON CERTAIN MP8 ENGINE EQUIPPED TRUCKS.
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THE TURBOCHARGER AND ASSOCIATED MOUNTING HARDWARE MUST BE CHANGED ON ALL TRUCKS INVOLVED IN THIS CAMPAIGN. *PE
Fuel System
34 bulletinsSelective Catalytic Reduction (SCR) Muffler Troubleshooting Guide - US10+OBD13 And Newer Emissions.
DEF Pump Troubleshooting Guide - US10+OBD13 And Newer Emissions.
Premium Tech Tool (PTT) - Message For Data Mismatch, Product Configuration Mismatch; Instruction To Run An Accessory Kit...
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Displayed When Attempting To Run Diagnostics For Diagnostic Trouble Codes (DTC) Or Programming - US10+OBD13 And Newer Emissions,
DEF Pump Troubleshooting Guide - US10+OBD13 And Newer Emissions
Selective Catalytic Reduction (SCR) Muffler Troubleshooting Guide - US10+OBD13 And Newer Emissions
USE FOR NEW VEHICLES (US21+OBD22 Emissions) - Intermittent Diagnostic Trouble Codes U02A3, U029D, U029E
Mack Chassis - Diesel Exhaust Fluid ( DEF ) System Cleaning/Flush After DEF Pump Failure Or System Contamination
Aftertreatment Hydrocarbon Injector (AHI) Troubleshooting Guide - US10+OBD13 And Newer Emissions
Regen Fails to Start/Initiate Or Starts And Immediately Stops - US10 And US10+OBD13 Emissions
System Date And Time, Information; Diagnostic Tool ( J-Pro, Premium Tech Tool ( PTT ) ) Displays Incorrect Timestamp For...
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Diagnostic Trouble Code ( DTC ) / Fault Code Occurrences, Possible Data Link Codes Present - US07 And Newer Emissions, Common Mod
Diagnostic Trouble Code (DTC) P04DB - Crankcase Ventilation Disconnected; US10+OBD13 To US14+OBD16 Emissions
Aftertreatment Hydrocarbon Injector (AHI) Troubleshooting Guide - US10+OBD13 And Newer Emissions
Volvo Chassis - Diesel Exhaust Fluid ( DEF ) Contamination In Fuel System, Inspection And Repair - US10 to US14 (...
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Non-Common Rail Fuel System )
Mack Chassis - Where To Find The Body Builder Portal - Body Builder Manual ( BBM ) Information - US04 And Newer...
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Emissions, Model Year 2008 And Newer
Diesel Fuel Information - Acceptable Biodiesel, Fuel Blend For Summer And Winter - US07 And Newer Emissions, Model Year...
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2008 And Newer
Mack Chassis - Disabling The Driver ID; Removing the Driver ID Prompt - US07 To US14+OBD16 Emissions, Model Years 2008...
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To 2017
Diagnostic Trouble Code ( DTC ) P02FA Illuminating The Malfunction Indicator Lamp (MIL) - US17 (GHG17, Common Rail Fuel...
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System) Chassis ONLY
Diagnostic Trouble Code ( DTC ) P0471 Illuminating The Malfunction Indicator Lamp (MIL) - US17 (GHG17, Common Rail Fuel...
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System) Chassis ONLY
Diagnostic Trouble Code ( DTC ) P0420 Illuminating The Malfunction Indicator Lamp (MIL) - US17 (GHG17, Common Rail Fuel...
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System) Chassis ONLY
Diagnostic Trouble Code ( DTC ) P009E - 73 - Fuel Pressure Relief Control Performance / Stuck Off - GHG17 ( US17 )...
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Chassis With Common Rail Fuel System, Updated to reflect GHG17 software release
Diagnostic Trouble Code ( DTC ) P009E - 73 - Fuel Pressure Relief Control Performance / Stuck Off - GHG17 ( US17 )...
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Chassis With Common Rail Fuel System.Changed repair instructions to reflect new procedures
Service Only Regen Requested With No Warning.
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Diagnostic Trouble Codes ( DTC ) P24A4 / P10FE Active Or Inactive With Several Counts - OBD15 And OBD16 Conventional Chassis; Does Not Apply To US17 (Common Rail Fuel System) Chassis.Updated to reflect release of FSB284-064 (Above)
Mack Chassis - Diesel Exhaust Fluid ( DEF ) System Cleaning/Flush After A Pump Failure or System Contamination.Removed...
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Tech Tip, Added correct operation ID
Expired - Refer to K93039325 - Mack Chassis - SNM16-032 DEF (Diesel Exhaust Fluid) Contamination In Diesel Fuel.New...
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solution released with improved information
MACK TRUCK: TO INCREASED PROTECTION AGAINST FUEL INJECTOR TIP EROSION, A NEW FUEL TANK VENTILATION FILTER WAS...
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IMPLEMENTED, AND MOUNTS ON OUTSIDE OF FRAME RAIL, USING FUEL TANK J BRACKET HUCK FASTENERS. MODEL CHU, CXU, GU, TD. *PE
MACK TRUCK: MOUNTED OUTSIDE OF FRAME RAIL, IS NEW FUEL TANK VENTILATION FILTER MOUNTING SLEEVE, USING FUEL TANK J...
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BRACKET HUCK FASTENERS AND TO INCREASE PROTECTION AGAINST FUEL INJECTOR TIP EROSION. MODEL CHU, CXU, GU, TD. *PE
MACK: ON THE RIGHT SIDE OF TRUCK, IS THE MOUNTED STANCHION EXHAUST BRACKET AND FUEL VENT LINES, WHICH THE FUEL TANK VENTILATION FILTER IS ADDED.
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MODELS CHU, CXU, GU, TD, MP7, MP8, MP10, US07, US10. MODEL YEARS 2008-2012. *PE
MACK: THE AFTERTREATMENT DIESEL EXHAUST FLUID (DEF) TANK FILLER NECK IS BEING REPLACED WITH AN IMPROVED FILLER NECK .
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*PE UPDATED 5/11/12. *PE
MACK TRUCKS: ON CERTAIN TRUCKS (CHU, CXU GU TD), ALL AFTERTREATMENT DIESEL EXHAUST FLUID (DEF) COOLANT HOSES ARE TO BE REPLACED.
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*PE
MACK TRUCK: THERE IS FUEL LEAKAGE AT TANDEM FUEL PUMP.
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THE REPLACEMENT OF FUEL PUMP WILL NOT CORRECT WEEP HOLE LEAKAGE OF FLUID LEAK. CHP, CTP, CXP, CHU, CXU, GU, LEU, MRU, TD, CMM, CMH MODELS. *PE
MACK TRUCKS: THERE ARE NEW EGR OUTLET HOSE CLAMPS.
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*RM
MACK: PROCEDURE TO FIX THE AN INSULATION BLANKET IN THE EXHAUST SYSTEM THAT CAN DETERIORATE OVER TIME.
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*RM UPDATED 9/12/11. *PE
MACK: PROCEDURE TO FIX THE AN INSULATION BLANKET IN THE EXHAUST SYSTEM THAT CAN DETERIORATE OVER TIME.
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*RM UPDATED 9/12/11. *PE
MACK: THE FUEL LEVEL SENDER IS INCORRECTLY INSTALLED AND CAN CAUSE INCORRECT FUEL LEVEL READINGS IN THE INSTRUMENT PANEL.
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*RM UPDATED 9/27/2011. *PE
Electrical
27 bulletins2008 Document reformated to be published as a TSB in Impact.
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Revised battery ti battery cable
NOx Sensor Troubleshooting Guide - US10+OBD13 And Newer Emissions.
(Back Office) - Cruise Control Inoperative After Updating Software VECU5 Without ESP Package (UESP).
Sensor And Parameter Value Monitor - Template Parameter List For Pre-OBD (9-Pin Diagnostic Connector) Chassis In Premium...
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Tech Tool ( PTT ); Regeneration And Road Test Sensor Monitor Parameters - US07 And US10 Emissions, Model Years 2008 To 2013
No Start Condition After Over The Air Programing - VECU5 No Start "Safe State"
Temperature Sensor Troubleshooting Guide - US10+OBD13 And Newer
Low Voltage Disconnect (LVD), Function Description
NOx Sensor Troubleshooting Guide - US10+OBD13 And Newer Emissions
Aftertreatment Control Module ( ACM ) Diagnostic Trouble Codes ( DTC ) U0001-88 and U0010-88 Lighting The Malfunction...
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Indicator Lamp ( MIL ); Possible Derate Warning US10 And Newer Chassis
Intake Pre-heater Electrical Schematics (Diagrams) - US10+OBD13, US14+OBD13 To US14+OBD16 Emissions
Lighting Control Module ( LCM ) Replacement - Refer To Technical Parts Information ( TPI ) 364 - 034 Control Unit
Aftertreatment Control Module (ACM) Offline/Not Visible/Missing From Control Unit Information in Premium Tech Tool (PTT)...
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- US10+OBD13 And Newer Emissions
Electronic Control Unit (ECU) Replacement (EMS, VECU, TECU, LCM) - Programming (Conversion Kit) Requirements When...
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Installing An ECU With A Newer Part Number - US04 To US10 Chassis (9-Pin Diagnostic Connector)
Particulate Matter ( PM ) Sensor Diagnostic Trouble Codes ( DTC ) Illuminating The Malfunction Indicator Lamp ( MIL );...
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Tech Tip TT-014-2016 - OBD16 And Newer Emissions (Commonly Model Year 2017, Includes Common Rail Fuel System Chassis), Rewritten to split emissions levels, reflect GHG17 software release
ECM and ACM Reprogramming, OBD2015
Mack Chassis - Aftertreatment Control Module ( ACM ) not visible in Premium Tech Tool ( PTT ).Added more checks and...
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procedures
INSTRUMENT CLUSTER REPROGRAMMING, VEHICLE BUILT FROM JAN.
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1, 2007 TO SEPT. 3, 2012, MAY EXPERIENCE AN INCREASE OF PARASITIC BATTERY DRAIN WITH KEY OFF.
CHANGES HAVE BEEN MADE TO THE STACKABLE 3 BATTERY BOX USED ON CERTAIN MACK GU MODEL CHASSIS FROM 20102013.
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THIS WILL IMPROVE THE PROTECTION OF THE BATTERIES FROM THE ENVIRONMENT THEREFORE IMPROVING THE CONDITION OF THE BATTERY TERMINALS, CABLES, CONNECTIONS WITHIN THE BOX IN REGARDS TO CORROSION.
CAB HARNESS INSULATION, INSTALLATION.
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CAB WIRING HARNESS MAY EXPERIENCE CHAFING.
POWER WIRES, REROUTING, CERTAIN MACK CHU, CXU, GU, AND TD TRUCK MODELS BUILT BETWEEN 01/01/07 AND 10/22/13, UTILIZES TWO...
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(RED) POWER WIRES THAT ROUTE FROM THE BUSSED ELECTRICAL CENTER (BEC) AND BEHIND THE RADIO. THE (RED) POWER WIRES COULD POSSIBLY CHAFE ON THE RADIO BRACKET.
MACK: WHEN THE OUTPUT FROM THE VECU GETS SHORTED OUT TO GND, THERE IS NO WARNING AND CAUSES 5TH WHEEL TO SLIDE WITHOUT...
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ACTIVATING 5TH WHEEL SLIDE SWITCH AND NEEDS TO BE REPROGRAM. MODEL 2010-2014 CHU, CXU, GU, TD. *PE
MACK TRUCKS: IMPROVEMENT WAS MADE FOR PROTECTION FOR STACKABLE BATTERIES FROM ENVIRONMENT TO PREVENT PREMATURE BATTERY...
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CORROSION WITHIN THE BATTERY BOX. MODEL 2010-2013 GU. *PE
MACK TRUCK: TORQUE ISSUE AND MATERIAL MAY BE CAUSING BATTERY CABLE CLAMPS TO CRACK OR BREAK.
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TRUCK NEEDS TO BE INSPECTED TO DETERMINE HOW MANY CLAMPS ARE CRACKED OR BROKEN. MODEL 2010-2012 CHU, CXU, GU, LEU, MRU, TD. *PE
MARCK TRUCK: INFORMATION REGARDING TWO UPPER HUCK BOLTS FOR FUEL TANK J BRACKET AND AFTERTREATMENT CONTROL MODULE (ACM).
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TO PROVIDE NECESSARY CLEARANCE, IF INTERFERENCE EXISTS, CUT OFF END OF HUCK BOLTS AND REMOVE ACM. MODELS GU. NO MODEL YEARS LISTED. *PE
MACK: ON CERTAIN MACK VEHICLES BUILT BEFORE 2/13/2012, THE FRONT CHASSIS TO UREA TANK CONNECTION, LOCATED ON THE SIDE OF...
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THE DEF TANK MAY RUB MOUNTING BRACKET OR NOT STAY SECURED. *JS
MACK TRUCKS: THE FUSE IDENTIFICATION DECAL IS BEING CORRECTED.
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*RM
MACK TRUCKS: THE LOCATION OF THE NITROUS OXYDE SENSOR AND PIPING AROUND IT HAS BEEN CHANGED TO PROTECT IT FROM MOISTURE...
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DAMAGE IF WATER ENTERS THE EXHAUST. *RM
Other
24 bulletinsCBR -Telematics Gateway (TGW) Connect Ability Issues
Mack Trucks now offer an improved HD Inter-Axle Through Shaft for the CRD 125, 150, 180, and 200 family carriers.
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The new HD shaft went into production on January 23rd, 2023 for 2.54 - 3.50 axle ratios and April 1st, 2023 for 3.56 - 3.98 ratios. The new HD through shaft is an upgrade over the current standard shaft and can now be used as a replacement part instead of the standard shaft. The new HD shaft has a new design to increase strength, longevity and life over the standard shaft.
Air Restriction Indicator
CBR: Diagnostic Trouble Code (DTC) P215A-64, Fault Code SPN 84 FMI 19
Vibration Diagnostics
2007 document reformatted to be published as a TSB in Impact.
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Lateral cab movement bracket.
2008 Document reformatted to be published as a TSB in Impact.
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Grille bar, replacment.
2008 Document reformatted to be published as a TSB in Impact.
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Loose oil filter spud.
2008 Document reformatted to be published as a TSB in Impact.
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Cooling system connections.
2008 Document reformated to be published as a TSB in Impact.
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Torque rod interference.
2008 Document reformated to be published as a TSB in Impact.
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Field repair for installing the grill.
2009 Document reformatted to be published as a TSB in Impact.
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Axle Carrier Pinion Angles
2008 document reformatted to be published as a TSB in Impact.
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Fan Ring clearance for GU Model Truck.
Premium Tech Tool ( PTT ) Training Materials And Support Tools
DEF Pump Cycling periodically Hours After Key Off
Mack - PTO Pump Speed Calculator
(Back Office Only) Mack Chassis - Cruise Control Inoperative After Disabling The Electronic Stability Program (ESP)
Volvo Chassis - FSB 237 - 020, Unit Injector Yoke Hold - Down Bolt Torque Specification
Mack Chassis - FSB 563-008 Plugs, Pressure Protection Manifold - New Brass Plugs For Noregon Pressure Protection...
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Manifold (PPM)
Unit Injector Yoke Hold-Down Bolt Torque Specification
DIAGNOSTIC TROUBLE CODES (DTCS), LOW OIL PRESSURE, CXU, GU, LEU, MRU.
SUMMARY TO BE PROVIDED ON A FUTURE DATE.
MACK TRUCKS: LOW OIL PRESSURE.
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STORED DTC SPN 100 FMI 1, DURING LONG HARD PULL CONDITIONS. *JS
MACK TRUCKS: THE DIAGNOSTIC CONNECTOR MAY BECOME LOOSE.
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INFORMATION ON REPLACEMENT OF THE DIAGNOSTIC RETAINER CLIP. *RM
Transmission
22 bulletinsCBR - Automated Manual Transmission ( AMT ) Flywheel Pilot Bearing Wear On Input Shaft.
2008 Document reformatted to be published as a TSB in Impact.
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Two-Piece clutch brake.
Warranty Automated Manual Transmission ( AMT, I-Shift, mDrive ) Control Housing Assembly; Guidelines For Filing A Claim...
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For Chassis Return Visit With Transmission Issues After A Repair Requiring Control Housing Removal And Reinstallation - US07 And N.
Automated Manual Transmission ( AMT ) I-Shift / mDRIVE - Ribbon Harness Replacement - Speed Sensor Bolts, Possible Fault...
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Codes P1058 - 21 Or MID 130 PID 161 FMI 1
Mack Chassis - Vehicles Equipped With An Automated Manual Transmission Model F ( AMT-F, mDrive ), Premium Tech Tool (...
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PTT ) Gearbox Calibration Failure; Gearbox Calibration Operation Stops And Fails At 33% When Run With Transmission Removed
Automated Manual Transmission (AMT) (Spigot Bearing) Input Shaft Repair Kit And Shim Kit, Part Number Information,...
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Reference Guide - US07 And Newer Emissions, Model Year 2008 And Newer
Mack Chassis - Equipped With An Automated Manual Transmission (mDrive, AMT) AMT-C, AMT-D Or AMT-F - Transmission Oil...
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Specifications - Model Years 2010 To 2020
Automated Manual Transmission Gearbox Will Not Shift To High Range After Gearbox Repair; MID 130 PSID 24 FMI 1, P1072-92...
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Unintentional Disengagement Of High Range - US07 And Newer Emissions, Model Year 2008 And Newer
Clutch Pedal Micro Switch Replacement.
Transmission Oil Cooler Hose, Replacement
Automated Manual Transmission (AMT) Faults - Diagnostic Trouble Codes (DTC) P1052-18 Or MID 130 PID 33 FMI 5...
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Intermittent Fault In Cold Weather - US07 And Newer Emissions, Model Year 2008 And Newer
Expired - Refer To K45673535 - Mack Chassis SNM15-002b mDRIVE Transmission Service Strategy ( Revised failure mode...
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descriptions )
Automated Manual Transmission Gearbox Will Not Shift To High Range After Gearbox Repair; MID 130 PSID 24 FMI 1, P1072-92...
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Unintentional Disengagement Of High Range - US07 And Newer Emissions, Model Year 2008 And Newer
Clutch Pedal Micro Switch Replacement
Certain GU trucks equipped with forward steer axles (18,000 lb rated front axles) and built before 2012, may experience...
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issues with static steering while sitting still. There is not enough ability with a single steering gear to overcome certain turning frictions.
MACK: ON SOME TRUCKS, MORE LEG AND KNEE ROOM WAS PROVIDED FOR OPERATOR COMFORT DUE TO AIR OPERATED CLUTCH ASSIST SYSTEM...
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DESIGNED TO REDUCE CLUTCH PEDAL EFFORT BY 20% AND CLUTCH PEDAL TRAVEL BY 2' (50.8MM). MODEL CHU, CTP, CXP, CXU, GU. NO YEARS LISTED. *PE
MACK TRUCKS: THE AIR ASSISTED CLUTCH CABLE ON SOME VEHICLES MAY FRAY AT THE CLEVIS.
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*JS
MACK: CLUTCH OPERATION ERROR PREVENTS STARTER ENGAGEMENT UNLESS PEDAL IS FULLY DEPRESSED.
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*RM
MACK TRUCKS: THE TRANSMISSION SHIFT INSTRUCTION LABEL HAS BEEN UPDATED.
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*RM
MACK TRUCKS: THE CLUTCH PEDAL CAN RUB AGAINS THE ANTI-LOCK BRAKE HARNESS CAUSING THE MALFUNCTION LIGHT TO GO ON.
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*RM
MACK TRUCK: THE OIL SLINGER THREADS ON THE INPUT SHAFT OF THE TRANSMISSION WERE THREADED INCORRECTLY AND COULD CAUSE LEAKAGE IN THE AREA.
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*RM
MACK TRUCKS: THERE ARE NEW REVISED TORQUE PROCEDURES TO PREVENT THE BULL GEAR MOUNTING SCREWS FROM LOOSENING.
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*RM
Suspension
8 bulletins2008 Document reformatted to be published as a TSB in Impact.
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Air suspension ride height.
Electronically Controlled Suspension (ECS) Losing Air Pressure
Mack Chassis - Front Hub With Unit-Bearings ( Unitized Wheel Bearings ), Inspection Information And Guidelines -...
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Commonly Model Year 2008 And Newer
MACK TRUCKS: REAR SUSPENSION HARDWARE TORQUE.
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BOLTS ARE LOOSE OR INCORRECTLY TORQUED ON THE PRIMAAX SUSPENSION. *JS UPDATED 07/18/2013 *JS
MACK TRUCKS: REAR SUSPENSION ADJUSTMENT WASHERS.
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REPLACEMENT OF THE SUSPENSION ADJUSTMENT WASHERS IS REQUIRED. *JS
MACK TRUCKS: SLACK ADJUSTER CONTROL ARM.
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HALDEX SLACK ADJUSTERS AND RIDEWELL SUSPENSION MAY EXHIBIT A CONDITION WHICH ALLOWS THE SLACK ADJUSTER CONTROL ARM TO MAKE CONTACT WITH THE RIDEWELL SUSPENSION WALKING BEAM DURING STEEP SUSPENSION ARTICULATION. *JS UPDATED 06/28/13. *PE UPDATED 12/19/13. *PE UPDATED 08/09/2014 *JS
MACK: DURING EXTREME DOWNWARD ARTICULATION OF REAR AXLE, THE AIR SPRING MAY SEPARATE AT MOUNTING BELL.
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*PE
MACK TRUCKS: FRAME FLANGE CONTACTING SUSPENSION CROSSMEMBER.
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CERTAIN MACK MODELS MAY HAVE CONTACT ISSUES BETWEEN THE FRAME RAILS AND CROSS MEMBER. THIS CONTACT CAN CAUSE A SIDE LOADING CONDITION TO THE FRAME. *JS
Software & Calibration
8 bulletinsMack Chassis - Bendix Vendor Configuration Program ( VCP ) Software Download Information
Mack Chassis - Diagnostic Trouble Code ( DTC ) P0128, Diagnostic And Repair - US14+OBD13 (Commonly Year Model 2015) And...
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Newer.Updated to reflect release of FSB284-064 (Above)
MACK TRUCK: FLASHERS ARE TO BE REMOVED DUE TO DURABILITY ISSUES.
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*JS
MACK: TORQUE ROD REPLACEMENT ON FRONT REAR AXLE.
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*JS UPDATED 5/9/12. *PE
MACK TRUCK: TRUCKS WILL BE REPROGRAM WITH THE LATEST SOFTWARE VERSION OF VEHICLE ELECTRONIC CONTROL UNIT AFTER...
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EXPERIENCING LOST OF DST2 AND THE CHASSIS ID. *PE
MACK TRUCKS: THERE ARE CRACKS IN A STEEL OIL TUBE THAT CAN LEAD TO LEAKING.
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*RM UPDATED 2/21/12. *PE
MACK TRUCK: THERE IS A SOFTWARE UPDATE.
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*RM
MACK: FAN RINGS ARE CRACKING DURING EXTREME SERVICE.
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*RM UPDATED 9/7/11. *PE
Brakes
6 bulletinsCBR - Active "Set Park Brake" Message On Drivers Information Display (DID).
BRAKE CHAMBER REPLACEMENT RECALL
INTERFERENCE BETWEEN THE BRAKE LINING AND THE SPRING CAP WAS DISCOVERED ON SOME MACK CHU, CXU, GU, TD, LEU, MRU TRUCKS...
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EQUIPPED WITH 203 MM (8 IN) REAR DRUM BRAKES AND CAMELBACK REAR SUSPENSION.
BRAKE CHAMBER REPLACEMENT RECALL.
MACK: AIR DISC BRAKE EXPERIENCING THERMAL OVERLOAD CONDITION THAT OVER ADJUSTMENT OF NORMAL PAD WEAR COMPENSATION THAT...
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MAINTAINS RUNNING CLEARANCE BETWEEN BRAKE PAD AND ROTOR AND REDUCES RUNNING CLEARANCE BELOW DESIRED LEVEL. MODEL CHU, CXU, GU, LEU, MRU, TD. NO YEARS LISTED. *PE
MACK TRUCKS: FOUR WAY FLASHER ABS FAULT.
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CERTAIN VEHICLES EQUIPPED WITH A WEBB SOLID STATE FLASHER, BUILT FROM JAN. 1, 2010 TO JUNE 29, 2012 MAY EXPERIENCE AN ACTIVE ABS FAULT WHEN THE 4 WAY FLASHER IS ENABLED. *JS
Lighting
6 bulletinsTSB-Charge Air Cooler t-clamp install.
Mack Chassis - Diagnostic Trouble Code ( DTC ) P226C Intermittently Lighting The Malfunction Indicator Lamp ( MIL ) -...
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OBD15 And OBD16 Conventional Chassis.Updated to reflect release of FSB284-064 (Above)
Diagnostic Trouble Code ( DTC ) P249C Intermittently Lighting The Malfunction Indicator Lamp ( MIL ) - OBD15 And OBD16,...
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Model Year ( MY ) 2016 and 2017 Chassis.Updated to reflect release of FSB284-064 (Above)
Diagnostic Trouble Code ( DTC ) P0422 Lighting The Malfunction Indicator Light ( MIL ) - OBD15 And OBD16 Chassis...
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(Non-Common Rail).Updated to reflect release of FSB284-064 (Above)
MACK TRUCKS: NEW SWITCH MOUNTING BRACKET WAS DEVELOPED TO REPLACE EXISTING TURN SIGNAL SWITCH MOUNTING BRACKET, DUE TO...
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CONTACT BETWEEN SWITCH FINGERS AND SLEEPING SHAFT, THAT CAUSED SWITCH OPERATION TO IMPROPERLY CANCELS ITSELF. MODEL CHU, CXU, GU, TD. *PE
MACK TRUCKS: TORQUE ROD TO MOUNTING BRACKET BOLTS WERE INSTALLED INCORRECTLY.
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THE BOLTS WERE INSTALLED IN AN OPPOSING MANNER. *RM
HVAC & Climate
5 bulletins2008 Document reformatted to be published as a TSB in Impact.
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HVAC fine particulate filter.
THE INCOMPATIBILITY OF HOSE INSIDE DIAMETER AND COMPRESSOR FITTING SIZE HAS CAUSED THE COMPRESSOR HOSES TO COME LOOSE OR...
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BLOW OUT FROM THE AIR COMPRESSOR FITTINGS.
THE INCOMPATIBILITY OF HOSE ID AND COMPRESSOR FITTING SIZE HAS CAUSED THE COMPRESSOR HOSES TO COME LOOSE/BLOW OUT FROM...
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THE AIR COMPRESSOR FITTINGS.
HVAC FLANGE, INSTALLATION, CHU, CXU, GU, TD.
MACK: FITTINGS FOR CURRENT AIR COMPRESSOR COOLANT HOSES ARE NOT THE SAME SIZE AT EACH END AND INCOMPATIBILITY OF HOSE...
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INSIDE DIAMETER AND COMPRESSOR FITTING SIZE CAUSED COMPRESSOR HOSES TO COME LOOSE OR BLOW OUT AIR COMPRESSOR FITTINGS. MODEL 2009-2013 GU7, GU8, MP8. *PE
Body & Paint
5 bulletins2008 Document reformatted to be published as a TSB in Impact.
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Paint protection.
MACK: THE DOOR STOP BRACKET WILL FAIL, ON SOME TRUCKS, DUE TO AN OVER EXTENSION OF DOOR, BUT A NEW DOOR DESIGN ASSEMBLY IS AVAILABLE.
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MODEL CHU, CXU, GU, TD. NO YEARS LISTED. *PE
MACK TRUCK: PASSENGER DOOR PEEP WINDOW IS LOOSENING FROM DOOR.
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THIS MAY RESULT IN THE WINDOW BUTYL TAPE SOFTENING BECAUSE OF HIGH TEMPERATURES. *PE
MACK TRUCK: CAB/DASHBOARD PANEL CRACKS MAY FORM DUE TO EXCESSIVE CAB FLEXING DURING EXTREME USE OF THE TRUCKS.
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*RM
MACK TRUCK: REAR TRIM PANEL WEAR PLATE, INSTALLATION.
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MODEL CHASSIS EQUIPPED WITH HIGH BACK OR MID BACK SEATS, THE SEAT BACK CAN RUB AND WEAR THROUGH THE REAR TRIM PANEL. DOES NOT APPLY TO CHASSIS EQUIPPED WITH SEARS BRAD SEATS. MODELS CH, CL, CV, CX AND GU. NO MODEL YEARS LISTED. *PE
Pre-Delivery & Maintenance
3 bulletinsService Literature Published and Released in May, 2023
CBR: eWarranty To UCHP Labor Code ( SCC Code ) Crossover, Conversion Information For Use With Campaigns ( FI, PI ) And...
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Recalls ( EC, SC ), Location On Trucks Dealer Portal ( TDP )
Stock Vehicle Storage and Maintenance
Tires & Wheels
3 bulletinsFlywheel Housing Thread Repair
MACK TRUCK: THE GRADE GRIPPER FEATURE, ON SOME TRUCKS, ARE PRONE TO HARSH ENVIRONMENTS WITH INTERNAL CONTAMINATION,...
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CAUSED BY BUILD UP OF GRIME, SALT, ROAD DEBRIS AND OTHER CONTAMINANTS. MODEL CHU, CXU, GU, TD. *PE
MACK TRUCKS: OIL SEEPAGE AT FLYWHEEL HOUSING.
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THIS PROBLEM HAS ALREADY BEEN SOLVED IN PRODUCTION, BUT THE PRODUCTION SOLUTION IS NOT COMPATIBLE WITH PREVIOUS GENERATION FLYWHEEL HOUSINGS. *JS
Infotainment
2 bulletinsInstrument Cluster Programming - Programming Fails Or Errors Display When Replacing An Instrument Cluster With A Newer...
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Part Number (Conversion Kit) - US04 To US10 Chassis (9-Pin Diagnostic Connector)
Mack Chassis - Replacement / Upgrade Of The Programmable Global Audio ( GLAD ) Radio With A Non-programmable Radio