1999 GMC Sierra TSBs

SOME CUSTOMERS MAY COMMENT ON HIGHER THAN EXPECTED ENGINE OIL CONSUMPTION.

SOME CUSTOMERS MAY COMMENT ON A MILD TO SEVERE ENGINE PING (COMMONLY REFERRED TO AS SPARK KNOCK) USUALLY WORSE DURING...

SOME CUSTOMERS MAY COMMENT ON A MILD TO SEVERE ENGINE PING (SPARK KNOCK) DURING ACCELERATION AND / OR ILLUMINATED...

SOME CUSTOMERS MAY COMMENT THAT THE SERVICE ENGINE SOON LAMP IS ILLUMINATED, NO 3RD AND 4TH GEAR, THE TRANSMISSION DOES...

SOME VEHICLES MAY EXHIBIT A SECURITY LAMP ILLUMINATED ON THE INSTRUMENT PANEL, ENGINE STALL, NO START CONDITION, AND DIAGNOSTIC TROUBLE CODE B2960.

SOME CUSTOMERS MAY HAVE CONCERNS WITH THE SECURITY LAMP ILLUMINATING WHILE DRIVING; THE SECURITY LAMP MAY BE ON OR OFF;...

ON SOME VEHICLES, AFTER TURNING OFF THE VEHICLE, THE ABS MOTOR CONTINUES TO RUN.

SOME VEHICLES EQUIPPED WITH INSTRUMENT PANEL CLUSTERS THAT CONTAIN A MESSAGE CENTER MAY HAVE CUSTOMER COMPLAINTS OF A...

SOME DRIVERS MAY COMMENT ABOUT THE SERVICE ENGINE SOON LAMP ILLUMINATING.

SOME CUSTOMERS MAY COMMENT ON A HIGHER THAN EXPECTED ACCELERATOR PEDAL EFFORT FROM THE IDLE POSITION, C/K SERIES PICK UPS (SILVERADO AND SIERRA).

SOME CUSTOMERS MAY COMMENT ON A WHIRLING SOUND FROM THE LOWER REAR SIDE OF THE ENGINE, OCCURING AS THE ENGINE WARMS UP,...

SUBJECT ON VARIOUS DRIVEABILITY CONCERNS-SES OR OIL LEVEL LAMP ILLUMINATES, SPARK KNOCK, EXHAUST POPPING.

VOLUNTARY EMISSION CAMPAIGN REGARDING VEHICLES BUILT WITH THE WRONG EXHAUST GAS RECIRCULATION VALVE.

SUBJECT REGARDING EXHAUST GAS RECIRCULATION VALVE (EGR) MISBUILDS.

RECALL CAMPAIGN REGARDING EXHAUST GAS RECIRCULATION VALVE MISBUILDS.

VOLUNTARY EMISSION CAMPAIGN INVOLVING VEHICLES WITH A MISBUILT EXHAUST GAS RECIRCULATION VALVE.

CUSTOMERS MAY COMPLAIN OF COOLANT LEAKS, LOW COOLANT LIGHT 'ON', OVERHEATING, NO HEAT, NO START, OR ODORS EMITTED FROM THE AIR CONDITIONING SYSTEM.

SOME VEHICLES MAY EXPERIENCE ENGINE IDLE SHAKE IN DRIVE, PARK, OR NEUTRAL.

This Preliminary Information communication provides information to the technician about vehicles that have a Service...

GM: THE SERVICE ENGINE SOON LIGHT IS ON, THERE IS ALSO A MISFIRE OR ENGINE NOISE.

GENERAL MOTORS CORP: SPECIAL COVERAGE ADJUSTMENT; ANALOG ONSTAR DEACTIVATION.

GENERATION III V8 ENGINE PISTON REPAIRS.

4L60E, 4L65E REPLACEMENT VALVE BODY GASKETS DOES NOT SEEM TO FIT.

DIAGNOSTIC TROUBLE CODE P0128 OR ENGINE WILL NOT REACH OPERATING TEMPERATURE.

FOUR WHEEL DRIVE INOPERATIVE AND THE 4WD SERVICE LIGHT WILL ILLUMINATE.

1999 - 2005 GEN II COLD ENGINE MISFIRE AT IDLE WITH POSSIBLE P0171 AND/OR P0174.

POWER WINDOW MOTOR NOW AVAILABLE SEPARATELY FROM THE POWER WINDOW REGULATORY ASSEMBLY.

SERVICE ENGINE SOON LIGHT AND P0300 WHEN TOWING, CRUISING UPHILL OR ON HARD ACCELERATION.

CHECK ENGINE LIGHT WITH A P0300 DUE TO 2-4 CYLINDERS MISFIRING ON THE SAME BANK OF THE ENGINE.

EXHAUST VIBRATION RESONANCE OR MOAN IN VEHICLES WITH GEN III V8 ENGINES.

P0420 AND P0430 DTSC IN THE DETROIT, MICHIGAN AREA WITH GEN III V-8 ENGINES.

ENGINEERING INVESTIGATION - CATALYTIC CONVERTER REPLACEMENT.

SERVICE ENGINE SOON LIGHT WITH A P0300 MISFIRE DUE TO MISFIRES MAINLY ON CYLINDER 7.

ENGINE TICK, RATTLE OR KNOCK NOISE AFTER CYLINDER HEAD GASKET REPLACEMENT ON THE 6.0L ENGINE.

THE SERVICE INFORMATION AND OWNERS MANUAL DO NOT SHOW A SERVICE INTERVAL FOR THE 8.6, 9.5, 9.75, 10.5, AND 11.5 INCH...

6.0L LQ4 VIN U ENGINE RESTRICTION.

ENGINE COOLANT LEAK AT INTAKE GASKET.

ROLL-OUT FOR THE GEN III SMALL BLOCK ENGINES WITH IRIDIUM SPARK PLUGS.

ADVANCE SERVICE INFORMATION - EXHAUST SYSTEM POPPING/SNAPPING NOISE WHEN VEHICLE IS HOT, AT IDLE OR IMMEDIATELY AFTER VEHICLE IS SHUT OFF.

ENGINE WHISTLE NOISE.

MALFUNCTION INDICATOR LAMP ON WITH A P0300 SET AND A MISFIRE.

THE SERVICE ENGINE SOON LAMP IS ILLUMINATED, NO 3RD AND 4TH GEAR, THE TRANSMISSION DOES NOT SHIFT CORRECTLY, THE...

RATTLE NOISE IN ENGINE.

RATTLE NOISE IN ENGINE.

MALFUNCTION INDICATOR LAMP ON WITH A P0300 SET AND A MISFIRE.

GEN III ENGINE NOISE AFTER HOT SOAK RESTART.

INCREASED ACCELERATOR PEDAL EFFORT, IDLE INSTABILITY.

CONCERNS WITH LAUNCH SHUDDER / VIBRATION ON ACCELERATION.

SUBJECT REGARDING LUBRICATION OF PROPELLER SHAFT DOUBLE CARDAN CV TYPE U-JOINT CENTERING BALL AND SEAT.*NLM

SOME OWNERS OF C1500 SERIES EXTENDED CAB PICKUP MODELS MAY COMMENT ON A VIBRATION/LAUNCH SHUDDER WHEN ACCELERATING FROM A STOP.

INFORMATION REGARDING PICK-UP BOX REINFORCMENT KITS, FOR WHEN ADDING TOOLBOXES OR LADDER RACKS.

INFORMATION REGARDING FRONTAL WIND NOISE CONDITION.

INFORMATION REGARDING NEW PICKUP BOX REINFORCEMENT KITS WHICH ARE AVAILABLE FOR CUSTOMERS WHO MAY WANT TO INSTALL A...

SOME CUSTOMERS MAY COMMENT THAT THE CENTER CONSOLE LATCH MAY STICK OR WILL NOT OPEN.

EXPERIENCING INCREASED ACCELERATOR PEDAL EFFORT.

SOME CUSTOMERS MAY COMPLAIN THAT THEIR FULL-SIZE PICKUP TRUCKS MAY BE HARD TO START OR INTERMITTENTLY DOES NOT START.

SUBJECT REGARDING FMVSS NECK EXTENSION REQUIREMENTS.

SUBJECT REGARDING CUSTOMER COMPLAINT OF WHISTLE AND WIND RUSH OR FLUTTER TYPE NOISE.

EXPERIENCING A VIBRATION AND LATERAL SHAKE ON SMOOTH ROAD SURFACES.

A DRIVELINE VIBRATION / GROWL NOISE.

EXPERIENCING RATTLE NOISE AT REAR SEAT UPPER ATTACHMENT WHERE THE SEAT CONNECTS WITH THE REAR CAB WALL.

SUBJECT REGARDING SEAT NOISE / VIBRATION - CREAK IN FRONT SEAT CUSHION, RATTLE / VIBRATION IN 40% FRONT SEAT, JINGLE IN 20% FOLDING CENTER SEAT.

DRIVELINE VIBRATION / GROWL NOISE.

NEW DESIGN FRONT AXLE SIDE BEARING ADJUSTERS.

HORN INOPERATIVE AT TIMES.

UNWANTED/LOOSE SEAT MOVEMENT.

REAR AXLE RETAINER BUTTON BREAKAGE.

REVISED FRONT CASTER AND CAMBER ADJUSTMENT PROCEDURE.

4WD MODELS WITH NOISE, VIBRATION ON DRY PAVEMENT.

261 TRANSFER CASE DRIVELINES GROWL 1100-1200 RPM.

REPLACEMENT FLEXPLATE MAY HAVE LARGER BOLT HOLES THAN THE ORIGINAL FLEXPLATE.

LEFT FRONT OF VEHICLE SITS LOW.

D HEIGHT SPECIFICATION MISSING FROM SI.

POOR PERFORMANCE FROM A STOP IN 2WD, AUTO OR 4WD HI.

REVISED REQUIREMENTS FOR INSTALLING THE RUNNING BOARD.

DESIGN CHANGE OF REAR OUTPUT SHAFT AND OIL PUMP REPLACEMENT PARTS.

INCREASED ACCELERATOR PEDAL EFFORT.

SCRAPING NOISE FROM REAR OF VEHICLE.

CENTER CONSOLE LID HARD TO OPEN OR CLOSE.

NEEDLE BEARINGS FOUND IN OIL PAN.

SOME CUSTOMERS MAY COMMENT ABOUT HOOD HINGE WIND NOISE .

SOME CUSTOMERS MAY COMMENT THAT THE MANUAL LOCK LEVER COMES LOOSE FROM THE DOOR TRIM PANEL.

SUBJECT REGARDING AVAILABILITY OF PICKUP BOX REINFORCEMENT KITS FOR TOOLBOX / REAR WINDOW BARRIER / LADDER RACK APPLICATIONS.

SOME CUSTOMERS WHOSE VEHICLES ARE OPERATED IN DUSTY TYPE ENVIRONMENTS, SUCH AS FARMING OR MINING OFF-ROAD TYPE...

SUBJECT REGARDING DOOR MANUAL LOCK LEVER DISENGAGES FROM DOOR TRIM PANEL (REPAIR LOCK LEVER) *JG

SUBJECT REGARDING FRONT AND REAR SIDE DOOR ACCESS DOOR NOISE (REPLACE DOOR CHECK LINK).

INFORMATION REGARDING FRONT AND REAR SIDE ACCESS DOOR NOISE.

SUBJECT ON DOOR MANUAL LOCK LEVER DISENGAGES FROM DOOR TRIM PANEL.

SUBJECT REGARDING NEW DOOR CHECK LINK.

SOME VEHICLES MAY EXPERIENCE A SQEAKING SOUND COMING FROM THE FRONT DOORS WHILE OPENING AND CLOSING.

CUSTOMER COMMENTS THAT THE 3RD OR 4TH DOOR IS HARD TO CLOSE WHEN COLD.

SOME OWNERS MAY COMMENT ON A RATTLE NOISE WHEN CLOSING EITHER OF THE FRONT DOORS.

EXPERIENCING A RATTLE TYPE NOISE COMING FROM THE DRIVER'S OR PASSENGER'S FRONT SIDE DOOR.

CUSTOMER MAY COMMENT THAT A HIGH EFFORT IS REQUIRED TO CLOSE EITHER FRONT DOOR.

CONCERNS WITH WIND NOISE FROM REAR QUARTER WINDOW.

SOME OWNERS MAY COMPLAIN OF SQUEAK OR RATTLE NOISE FROM FRONT HINGE PILLAR / INSTRUMENT PANEL AREA.

EXPERIENCING RATTLE NOISES IN INSTRUMENT PANEL COMPARTMENT.

COMMENTS ABOUT A SQUEAK NOISE WHEN OPENING OR CLOSING THE FRONT DOORS.

This Preliminary Information communication provides information to the technician about vehicles that may have slack in one of the tailgate cables.

This Preliminary Information communication provides information to the technician about vehicles that may have slack in one of the tailgate cables.

LEFT FRONT AXLE SHAFT DIFFICULT TO REMOVE.

OUTSIDE REARVIEW MIRROR HOUSINGS COME LOOSE FROM BASE.

DOOR HINGE REPLACEMENT KIT.

4L80E OUTPUT CARRIER THRUST WASHER CHANGES.

WINDRUSH AROUND WINDSHIELD.

REAR QUARTER GLASS SERVICE REPLACEMENT KITS MAY HAVE DEFORMED SEALING STRIPED WHEN INITIALLY REMOVED FROM THEIR PACKAGING CAUSING DEALERS TO REORDER.

SQUEAK OR CREAK NOISE FROM UNDERBODY OVER BUMPS.

WINDSHIELD REVEAL MOLDING FLUTERING.

CUSTOMERS MAY COMMENT ABOUT A BRAKE SQUEAK OR A NOISE, PARTICULARLY AFTER A COLD SOAK AND ON THE FIRST BRAKE APPLICATION.

LOW EFFORT PARKING BRAKE APPLY SYSTEM.

SUBJECT REGARDING CAMPAIGN 0093A - FRONT BRAKE PIPE IN CONTACT WITH THE BODY CROSS SILL.

BRIEF INFORMATION CONCERNING PARKING BRAKE SHOE ADJUSTMENT.

SUBJECT REGARDING A CLEARANCE CONDITION BETWEEN THE FRONT RIGHT-HAND BRAKE PIPE AND THE BODY CROSS SILL.

EXHIBITING FRONT BRAKE PIPE CONTACT WITH BODY CROSS SILL.

SUBJECT PERTAINING TO FRONT BRAKE PIPE CONTACT WITH BODY CROSS SILL.

SUBJECT REGARDING CUSTOMER SATISFACTION CAMPAIGN - FRONT BRAKE HOSE ABRASION.

COMPLAINTS ABOUT A SQUEAL NOISE COMING FROM THE BRAKES.

COMMENTS OF A CLUNK OR A THUMP NOICE FROM REAR OF VEHICLE WHEN BRAKES ARE APPLIED.

This Preliminary Information communication advises the technician that the Hydro-Boost is not serviceable and will need...

This Preliminary Information communication advises the technician that the Hydro-Boost is not serviceable and will need...

CHEVROLET/GMC/CADILLAC: ANYTIME HYDRAULIC BRAKE PIPES ASSEMBLY NEED REPLACING, PRE-FORMED AND PRE-FLARED BRAKE PIPES...

ABS LIGHT ON, DTC'S C0265, C0201, U1041 SET AND/OR LOSS OF COMMUNICATION WITH BRAKE MODULE.

APPLICATION OF HORN AT HORN PAD INOPERATIVE.

AVAILABILITY OF REAR WHEEL MUD FLAPS TO REDUCE DEBRIS BUILD-UP ON REAR BRAKE CALIPERS AND/OR REAR WHEELS.

ANTI-LOCK BRAKE SYSTEM (ABS) LIGHT ON, DIAGNOSTIC TROUBLE CODES (DTCS) C0265, C0201, U1041 SET AND/OR LOSS OF COMMUNICATION WITH BRAKE MODULE.

REAR PARKING BRAKE SHOE RETAINING SPRING CLIP SERVICE KIT FOR DRUM-IN-HAT (DIH) EQUIPPED VEHICLES.

ANTILOCK BRAKE (ABS) ACTIVATION AT LOW SPEEDS (CLEAN WHEEL SPEED SENSOR MOUNTING SURFACE).

RIGHT REAR INNER BRAKE PAD WEAR.

ANTILOCK BRAKE (ABS) ACTIVATION AT LOW SPEEDS ON VARIOUS MODELS INCLUDING THE 1995 AND 1996 ENVOY.

TRAILER BRAKES APPLIED WHEN HEADLIGHTS / PARK LAMPS ARE ON, BRAKE CONTROLLER ILLUMINATION.

ANTILOCK BRAKE (ABS) ACTIVATION AT LOW SPEEDS.

SOME FOUR-WHEEL DRIVE EXTENDED CAB SHORT BED MODELS MAY EXHIBIT A BUMP/CLUNK ON STOP OR ACCELERATION.

INFORMATION ON 4-WHEEL DRIVE EXTENDED CAB, SHORT BED VEHICLES WITH 4-WHEEL DRIVE EXTENDED CAB, SHORT BED WITH A BUMP OR CLUNK ON STOP OR ACCELERATION.

THIS MESSAGE COVERS TRUCKS WITH FOUR-WHEEL DRIVE EXTENDED CAB SHORT BED WITH A BUMP OR CLUNK ON STOP OR ACCELERATION IN...

SOME EXTENDED CAB SHORT BED VEHICLES WITH FOUR-WHEEL DRIVE MAY EXHIBIT A BUMP OR CLUNK ON STOP OR ACCELERATION FROM A STOP.

SOME VEHICLES EQUIPPED WITH 4-WHEEL DRIVE EXTENDED CAB AND SHORT BED MAY EXPERIENCE A BUMP OR CLUNK ON STOP OR ACCELERATION.

SOME CUSTOMERS MAY COMMENT THAT THEY ARE UNABLE TO LOWER THE SPARE TIRE.

SOME OWNERS MAY COMMENT ON A SLIPPING TYPE CONDITION AT THE FRONT WHEELS WHILE THE VEHICLE IS IN FOUR WHEEL DRIVE (4WD).

SOME OWNERS MAY COMMENT ABOUT A SLIPPING TYPE CONDITION AT THE FRONT WHEELS WHILE THE VEHICLE IS IN FOUR WHEEL DRIVE (4WD).

FLEXIBLE SPARE TIRE HOIST TOOL.

NEW FLEXIBLE SPARE TIRE HOIST TOOL AVAILABLE TO ASSIST IN LOWERING/REMOVING SPARE TIRE.

SPARE TIRE IS DIFFERENT SIZE THAN OTHER TIRES.

THE NVG 136 ALL WHEEL DRIVE (AWD) TRANSFER CASE AND THE 236 AND 246 NVG SELECTABLE TRANSFER CASES OPERATING IN THE AUTO...

REVISED WHEEL DRIVE SHAFT NUT TORQUE SPECIFICATION.

RECENT SHIPMENT OF FLEXIBLE SPARE TIRE HOIST TOOL.

SPARE TIRE FLEXIBLE TOOL AVAILABILITY.

REFERENCE GUIDE FOR THE TECHNICIAN TO UPGRADE A VEHICLE FROM FACTORY WHEELS AND TIRES TO 20 INCH WHEELS AND TIRES, WHICH ARE AVAILABLE THROUGH GMSPO.

GEN III REPLACEMENT FLYWHEEL BOLT HOLES LARGER THAN ORIGINAL PART.

FRONT WHEELS SLIPPING WITH VEHICLE IN FOUR WHEEL DRIVE.

THE NVG 136 ALL WHEEL DRIVE (AWD) TRANSFER CASE AND THE 236 AND 246 NVG SELECTABLE TRANSFER CASE SHUDDER ON TURNS.

SLIPS IN 4-WHEEL DRIVE, NOISE, VIBRATION, LEAKS, HOT ODOR.

TIRE SLOWLY GOES FLAT AND/OR EXCESSIVE WHEEL VIBRATION CAUSED BY BEAD SPLITS (REPLACE WHEELS WITH NEW HEAVY DUTY RIM...

DIAGNOSIS OF CRACKED OR BROKEN TRANSMISSION CASE.

SOME VEHICLES WILL NOT MOVE WHEN 4-WHEEL DRIVE IS REQUESTED, NOISE, SHUDDER, POOR PERFORMANCE, TRANSMISSION / TRANSFER...

PRODUCT RECALL CAMPAIGN TO TORQUE THE STEERING GEAR TO FRAME BOLTS TO THE PROPER SPECIFICATION.

VEHICLES WITH 4L60-E AUTOMATIC TRANSMISSIONS MAY EXHIBIT VIBRATION DURING ACCELERATION FROM 0 - 40 KM/H (0-25 MPH).

SUBJECT PERTAINING TO HARSH 1 - 2 AND 3 - 2 SHIFTS.

VARIOUS INFORMATION ON STEERING GEAR TO FRAME BOLT TORQUE.

This Preliminary Information communication provides information to the technician about vehicles that may have a...

This Preliminary Information communication provides information to the technician about vehicles that have slip in...

This Preliminary Information communication provides information to the technician about the percentage of UV protection...

ELECTRONIC TRANSFER CASE UNABLE TO COMPLETE SHIFT.

DIAGNOSTIC INFORMATION FOR INTERMITTENT TRANSMISSION DOWNSHIFT, SLIP, BUSY/CYCLING TCC OR NOISY COOLING FAN.

4L60E, 4L65E FORWARD AND LOW REVERSE WAVED STEEL CLUTCH PLATE APPEARANCE CHANGE.

4L60-E AUTOMATIC TRANSMISSION OIL PUMP FIRST AND SECOND DESIGN IDENTIFICATION.

4L80E, 4L85E WHINE NOISE IN FIRST AND SECOND GEAR.

MALFUNCTION INDICATOR LAMP (MIL) IS ON; THE TRANSMISSION IS STUCK IN THIRD GEAR; AND / OR THE INSTRUMENT CLUSTER IS INOPERATIVE.

SUBJECT REGARDING STEERING SHAFT CLUNK CONDITION.

CONCERNS THAT CLUNK NOISE CAN BE HEARD COMING FROM UNDER THE HOOD ALSO FELT IN THE STEERING WHEEL.

SUBJECT REGARDING POWER STEERING SYSTEM NOISE THAT REQUIRES REPLACEMENT OF THE RACK AND PINION ASSEMBLY ON TWO-WHEEL DRIVE MODELS.

CLUNKING NOISE UNDER HOOD AND CAN BE FELT IN STEERING WHEEL AND/OR STEERING COLUMN (REPLACE UPPER INTERMEDIATE STEERING SHAFT [I-SHAFT] ASSEMBLY).

LACK OF STEERING ASSIST OR SHUDDER DURING PARKING LOT TYPE MANEUVERS.

CLUNKING NOISE UNDER HOOD AND CAN BE FELT IN STEERING WHEEL.

SUPPLEMENT TO 00-02-35-003F CLUNKING NOISE UNDER HOOD AND CAN BE FELT IN STEERING WHEEL.

VARIOUS STEERING OR SUSPENSION CONCERNS AFTER GM ACCESSORIES 20 INCH TIRE/WHEEL ASSEMBLIES HAVE BEEN INSTALLED.

INTERMEDIATE STEERING SHAFT SERVICE KIT.

INNER TIE ROD RELEASED FOR SERVICE.

CLUNKING NOISE UNDER HOOD AND CAN BE FELT IN THE STEERING WHEEL.

CLUNKING NOISE UNDER HOOD AND CAN BE FELT IN THE STEERING WHEEL.

SUBJECT REGARDING REVISED WHEEL SPEED SENSOR REPLACEMENT PROCEDURE.

FRONT SUSPENSION COIL SPRING NOISE.

REDUCED STEERING EFFORT (DIAGNOSE/REPLACE STEERING WHEEL POSITION SENSOR).

FUEL AND TEMPERATURE GAUGE INOPERATIVE, LOW FUEL AND BATTERY LIGHT ON, PRNDL INOPERATIVE.

SUPPLEMENT TO 04094 FRONT WHEEL SPEED SENSOR CORROSION.

PRODUCT SAFETY RECALL REGARDING FRONT WHEEL SPEED SENSOR CORROSION.

REPLACEMENT OF CONNECTOR WHEN REPLACING FUEL TANK MODULE/FUEL PUMP MODULE.

4WD INOPERATIVE AND DIAGNOSTIC TROUBLE CODE (DTC) U1026 ATC FUSE OPEN.

DIAGNOSTIC INFORMATION FOR INTERMITTENT VEHICLE NO CRANK DEAD BATTERY.

INFORMATION ON NEW SPARK PLUGS AND GAPPING.

PICKUP BOX SHEET METAL FRACTURE / DAMAGE WITH AFTERMARKET ACCESSORIES INSTALLED.

SOME CUSTOMERS MAY COMMENT ON A LEAN HESITATION, SAG OR STUMBLE PRESENT DURING LIGHT TO MODERATE ACCELERATIONS.

THIS IS A PRODUCT UPDATE VME THAT INVOLVES CERTAIN PICK-UP TRUCKS.

FOG LAMPS INOPERATIVE.

HANDLING CHARACTERISTICS OF VEHICLES WITH 20 INCH WHEEL/TIRE ASSEMBLIES INSTALLED.

INTERMITTENT SERVICE 4WD LIGHT COMES ON WITH DIAGNOSTIC TROUBLE CODE (DTC) C0306 OR C0308 STORED IN TCCM.

SIR LIGHT ON STEADY AFTER BULB TEST AND NO DIAGNOSTIC TROUBLE CODES (DTCS).

ALL FULL SIZE TRUCKS PICK UP BOX SHEET METAL FRACTURE/DAMAGE WITH AFTERMARKET ACCESSORIES INSTALLED.

4L60E/4L65E INTERMITTENT NEUTRAL CONDITION WHILE ACCELERATING FROM A STOP OR WHILE DRIVING.

DAYTIME RUNNING LAMP (DRL) BULB REPLACEMENT.

SOME VEHICLES MAY DISPLAY A DIAGNOSTIC TROUBLE CODE OF P0446 (EVAP CANISTER VENT).

EXHAUST MOAN OR VIBRATION AT LOW VEHICLE SPEEDS BETWEEN 900-1200 RPM UNDER LOAD.

SOME VEHICLES MAY EXPERIENCE REPEAT FUEL PUMP FAILURES.

GMC: FUEL GAUGE FLUCTUATION IN PARK OR NEUTRAL, CAUSING THE LOW FUEL LIGHT TO ILLUMINATE.

SUPPLEMENT TO BULLETIN 99-06-04-047A FOR FUEL SYSTEM CLEANING.

EXHAUST VIBRATION RESONANCE OR MOAN.

EXHAUST MOAN/VIBRATION.

EXHAUST MOAN/VIBRATION.

This technical bulletin provides a procedure to lube the rear leaf springs on vehicles with the condition of a squeak...

SUSPENSION VIBRATION OR FRAME BEAMING AT 40 - 60 MPH.

USE OF CORRECT INSTALLATION PROCEDURE FOR LOOSE HUBCAP ASSEMBLY.

SUSPENSION VIBRATION OR FRAME BEAMING AT 40 -60 MPH.

SPRING SLAP NOISE FROM THE REAR OF THE GMT 400 SERIES TRUCK.

REAR LEAF SPRING SLAP OR CLUNK NOISE (REPLACE SPRING INSERTS) *TT UPDATED 10/18/07.

REAR SPRING SLAP OR CLUNK NOISE.

SUBJECT REGARDING LOSS OF HVAC SYSTEM MODE AND/OR TEMPERATURE CONTROL.

A CONDITION MAY EXIST WHERE THE CUSTOMER CANNOT CONTROL THE HVAC SYSTEM MODES AND / OR THE TEMPERATURE.

SOME CUSTOMER MAY COMMENT THAT THE WINDOWS DO NOT DEFROST ON A TIMELY BASIS.

LOSS OF HEATING VENTILATION AIR CONDITIONING.

DIAGNOSTIC INFORMATION TO ACCURATELY DIAGNOSE A/C LOW PRESSURE SWITCH USING NEW KENT MOORE SPECIAL TOOL GE-47742.

AIR CONDITIONER (A/C) LOW PRESSURE SWITCH DIAGNOSTIC TOOL.

SOME CUSTOMERS MAY COMMENT ON THE SERVICE 4WD INDICATOR ILLUMINATING WITH DIAGNOSTIC TROUBLE CODE B2725 SET.

CAMPAIGN PARTS BULLETIN REGARDING FMVSS NECK EXTENSION REQUIREMENTS.

BUICK\CHEVROLET\GMC SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER.

SNOW PLOW PREP PACKAGE INFORMATION - SERVICE VME.

CLUNK, BUMP OR SQUAWK WHEN VEHICLE COMES TO A COMPLETE STOP OR ACCELERATION FROM COMPLETE STOP.

SERVICE VME. SUPPLEMENT TO 00-02-35-003L.

INFORMATION REGARDING REPLACEMENT OF THE FRONT SEAT BELT RETRACTOR AND BUCKLE USAGE.

THE SEATBELT REPLACEMENT PARTS DO NOT MATCH OR ARE UNABLE TO LATCH TO THE EXISTING BELT.

TWEETER SPEAKER RATTLE IN FRONT SIDE DOOR(S), TWEETER SPEAKER FALLS OUT OF POSITION.