2021 Freightliner Business Class M2 TSBs

Passive Lube Management

Performance Passive Lube Management.

REVISION: 3 new SRTs and repair procedures have been created to address specific issues that arise during the repair.

Passive Lube Management

REVISION: If you find modifications to the chassis, please submit a WSC Inquiry before beginning any additional work.

Errors found in the cotter pin installation process indicate that it may not have been completed properly. This may result in the cotter pin not being bent correctly or missing altogether.

In the spirit of continuous improvement, DTNA reviewed sublet-related policies and procedures. The goal was to improve language clarity and optimize processes. Revisions are in blue font.

Some GHG17 DD Platform Heavy Duty oil pans may experience an issue with the oil pan drain plug insert spinning during removal or installation while completing an oil change. Leaking may also be observed at the drain plug and/or other plugs in the oil pan.

A newly designed, dual-arm friction shoe damping tensioner was implemented for the DD Heavy Duty Platform. The revision includes additional information on retrofit and service kits.

This letter is to announce a reimbursement available to dealers for travel to a customers location to perform a recall or field service campaign.

In the spirit of continuous improvement, DTNA reviewed sublet-related policies and procedures. The goal was to improve language clarity and optimize processes.

Warranty Department will be revising the Warranty Manual.

The following guidelines are for cleaning and disinfecting commonly touched surfaces on the inside and outside of a vehicle. For best results, follow cleaning and disinfecting procedures fully and consistently. Ensure there is adequate ventilation when using chemicals. NOTICE: Wipe down fragile components carefully to avoid damaging the vehicle.

A newly designed, dual-arm friction shoe damping tensioner was implemented for the DD Heavy Duty Platform.

A newly designed, dual-arm friction shoe damping tensioner was implemented for the DD Heavy Duty Platform.

DTNA is pleased to announce the release of new Warranty-related training videos. The videos provide Warranty content in short instructional videos that are available on demand through the AftermarkeTV Video Channel icon on the Aftermarket Resource Center (ARC) home page.

To promote 24-hour throughput and maximum efficiency, DTNA is adjusting multiple handling policies: Launching a new handling allowance for parts ordered from another Authorized Service Location because the facing Part Distribution Center (PDC) is out of stock Retiring Detroit's Customer First Program

This version replaces the version dated 5/1/14 and adds New Cascadia.

Some Business Class M2 and 108/114 Severe Duty vehicles equipped with a compressed natural gas (CNG) engine and automatic transmission may experience higher exhaust temperatures than vehicles equipped with a diesel engine.

This document applies to Freightliner M2 Business Class used in a Fire/Emergency application and equipped with FTL flat leaf spring rear suspensions. The FTL flat leaf spring rear suspension permits the spring pack to shift laterally within the spring hanger brackets. Under heavy cornering load applications, the spring pack can shift laterally and contact the sidewall of the spring hanger bracket. Driver of the vehicle will detect an audible popping or knocking noise from the rear suspension when turning the vehicle.

vehicles.

Detroit's TechComm team created visual aids for the network and released exploded view posters for DD platform engines. In early 2021, Detroit added multiple DT12 posters.

Version 14.

Revision is Step 8 drilling instructions expanded. The attached document provides work instructions for relocating the height-control valve downward 1.62 inches (41.3 mm) to prevent the linkage from protruding above the top flange of the frame when the suspension air is dumped.

14

This heavy duty friction style belt tensioner kit contains the belt tensioner and two M10 bolts to correctly pin the friction style belt tensioner. The M10x80mm bolt is used to pin the engine cooling fan drive arm. The M10x50mm bolt is used to pin the engine accessory drive arm.

The revision has updated inspection procedures. DTNA has determined that some GHG17 Detroit DD5 engines will need to have the fan hub bolts inspected for correct torque.

DTNA has determined that some GHG17 Detroit DD5 engines will need to have the fan hub bolts inspected for correct torque.

The attached document provides work instructions for relocating the height-control valve downward 1.62 inches (41.3 mm) to prevent the linkage from protruding above the top flange of the frame when the suspension air is dumped.

determined that some Model Year 2020 GHG21 DD13 engines require reprogramming of the MCM to meet certification. NOTE: Reference 20TS-04 Detroit CPC501T GHG21 Only; Bootloader Update if New Cascadia CPC501T is not at the software level shown in this table. The Corrective Procedure also has been updated.

Daimler Trucks North America LLC, on behalf of its Detroit Powertrain Division, has determined that some Model Year 2020 GHG21 DD13 engines require reprogramming of the MCM to meet certification.

Occasionally we see trucks come in with fuel leaking from the high pressure fuel pump weep hole. This is NOT a defect in the pump and further diagnostics need to be performed to find the root cause.

Detroit established the Warranty Service Replacement Engine Program to support an unrepairable catastrophic engine failure due to manufacturing defect. To improve understanding and utilization of the program, DTNA is clarifying eligibility and engine returns.

The Detroit Reman Long Block Program has expanded. The expansion reduces complexity in ordering reman engines and promotes stocking reman engines to meet uptime commitments.

The rear suspension height control valve and linkage installation on these 15 vehicles will need to be corrected using the following work instructions. Since this CAL was originally published on 3/6/20, The OWL VMRS correction code has been revised from 996-F204A to 91C-5000A.

The rear suspension height control valve and linkage installation on these 15 vehicles will need to be corrected using the following work instructions.

Clean Truck Check.

Clean Truck Check.

Clean Truck Check.

Prior post concerned correcting an incorrect listed part number.

EDIT: 06-93316-002 is the correct part number

REVISION: Some vehicles formerly in Group F have been moved to Group G and have been assigned a new part number as specified in Table 1. An SRT for 'Calibration Code Only: Update or Confirm' has been added, as shown in Table 2, to be used when a new DEF header is not required. There have been some other minor changes to the work instructions and SRT times.

Description of Revisions: This bulletin replaces the version dated 02/01/2016. Information about auto baud rate connections has been included.

The Call Center has received several calls pertaining to this LCL sensor introduced to in 2018. The purpose of this solution is to bring better awareness to the sensor functions, fault codes generated, along with providing testing procedures used to validate the sensors condition. Additional information has been added.

This bulletin replaces the version dated 11/11/2019. Figure 3 has been updated with a new hardware part number. A procedure was added to the data download process.

DTNA determined that since adopting the AutoMeter BCT-460DTNA Powernet Assessment Tool (AutoMeter) as the required powernet system tester, not all battery tags have to be retained support Warranty-related claims.

The Electrical Guide for M2106, M2112, 108SD, 114SD Body Builder Reference Guide Revision: D June 2019 incorrectly displays pins 2 and 3 of the customer access 8 pin connector on table 5 as Hot with crank, Ignition controlled battery (+) thru Disconnect switch (If disconnect switch specified).

The Call Center has received several calls pertaining to this LCL sensor introduced to in 2018. The purpose of this solution is to bring better awareness to the sensor functions, fault codes generated, along with providing testing procedures used to validate the sensors condition.

This bulletin replaces the version dated 5/31/2017. Information is added about the BCT-460DTNA PowerNet Assessment Tool. When troubleshooting Powernet issues, use the BCT-460DTNA PowerNet Assessment Tool. As of May 29, 2018, the AutoMeter is the only Daimler-approved tool for troubleshooting vehicle Powernet issues.

On Detroit DT12 equipped vehicles, it may be necessary to complete an additional step in the programming process when updating the TCM software.

The frontwall harness that controls the LED step lighting is wired incorrectly. The frontwall harness will be repinned.

Description of Revisions: The bulletin replaces the version dated 05/14/2024. Creation date has been updated.

Update to CXA 6_24_NOx submission.

Description of Revisions: The bulletin replaces the version dated 05/14/2024. Creation date has been updated.

The updated times will be applied to repair orders opened on or after April 5, 2021.

This bulletin replaces the version dated January 1, 2015. New Cascadia has been added to the model list.

Current subscribers of DiagnosticLink 8.11 or 8.12 may upgrade to DiagnosticLink 8.13 at no cost. All DTNA Service shops & OEM locations are required to maintain the latest version of software on each of their stations.

All DTNA Service shops & OEM locations are required to maintain the latest version of software on each of their stations.

On Wednesday, June 10, 2020, DiagnosticLink 8.12 will be made available for download from the ordering system. Current subscribers of DiagnosticLink 8.xx can upgrade to DiagnosticLink 8.12 at no cost. All DTNA service shops are required to maintain the latest version of software on each of their stations.

REVISION: 3 new SRTs and repair procedures have been created to address specific issues that arise during the repair.

REVISION: 3 new SRTs and repair procedures have been created to address specific issues that arise during the repair.

REVISION: If you find modifications to the chassis, please submit a WSC Inquiry before beginning any additional work.

Vehicle has excessive mirror shake going down the road.

The left and right hood lighting of these vehicles have separate ground paths to the frame and use the same splice pack parts. The splice packs are part of the hood commodity and located near the headlight assemblies. These splice packs can fail, resulting in either the left or right lighting becoming intermittent or inoperative.

On certain vehicles, the front rotor nuts may not be torqued to manufacturer specification. Loose components could cause damage to the ABS tone rings, the ABS sensors, and the anchor plate mounting fasteners.

Certain vehicles with Detroit front axles and Meritor EX-L front air disc brakes do not have access to the front brake zerk fittings for lubrication.

Left tail light goes out when brake lights come on.

studs fracture due to hydrogen embrittlement. A hold has been placed on vehicles at plants and facilities to inspect before releasing for delivery.

fracture due to hydrogen embrittlement. Inspection of vehicles may delay delivery of vehicles.

Please see the attached instructions on inspecting the ConMet disc brake rotor to hub fastener. Rotor mounting studs installed on steer and drive hubs on vehicles with flat rotors may fracture due to hydrogen embrittlement.

Our records indicate that you are the owner of certain vehicles and therefore DTNA is sharing the following documentation with you. Please see the attached instructions on inspecting the ConMet disc brake rotor to hub fastener.

ABS chassis harness is rubbing on the rear of the driver side forward cab mounting bracket on M2 106 trucks with a 160 MM Cab Hgt. This may cause open or shorted circuits in multiple wires in the harness transitioning from the chassis to the cab. Noticeable symptoms include illumination of the ABS and ATC indictor lamps.

The updated after treatment system (ATS) diesel exhaust fluid (DEF) pump times will be applied to repair orders opened on or after April 12, 2021.

A design change removed the magnets from the fill necks for some 6-gallon diesel exhaust fluid (DEF) tanks. If the vehicle is equipped with a non-magnetic fill neck 04-32529-000, it can be updated to a magnetic neck 04-32529-001. This bulletin replaces the version dated 04/18/2017. Updated availability of magnetic fill neck option for other diesel exhaust fluid (DEF) tank part numbers.

On Thursday, September 3, 2020, Service Pack (SP) 2 for DiagnosticLink 8.12 Standard and Professional will be made available to download from the Detroit Diesel server.

D20M8REV1 have been posted on DTNAConnect.

Potential travel reimbursement applies to DTNA truck dealers and Detroit Diesel distributors. Thomas Built Buses will be addressed separately.

Note: This document supersedes 14 TS-25 and 15 TS-8. Detroit Diesel has determined that some, Diesel Particulate Filters (DPFs) are compatible in pairs and or can be mixed together within EPA10 and GHG14 Systems. For 1-BOX and Two-Box Configuration Aftertreatment Systems (ATS), this is only possible when the filters are used in accordance with Tables 1 and 2 shown below. All other DPFs, NOT mentioned below, are NOT compatible.

available to download from the Detroit Diesel server.

Fan hub bolts may be insufficiently torqued which could lead to a failure and excessive truck down time.

frame rails and an Airliner 20,000 lb or 21,000 lb rear suspension.

Revision removed steps instructing removal and installation of wheels. Daimler Trucks North America has released a new axle shaft to hub rubber O-ring (part number 11-30728-000) as a replacement for the paper gasket (part number 11-14418-000). The new O-ring will provide better sealing and is reusable. It is quicker and easier to use compared to the paper gasket, because using a paper gasket requires cleaning the hub when the axle shaft is removed.

Daimler Trucks North America has released a new axle shaft to hub rubber O-ring (part number 11-30728-000) as a replacement for the paper gasket (part number 11-14418-000). The new O-ring will provide better sealing and is reusable. It is quicker and easier to use compared to the paper gasket, because using a paper gasket requires cleaning the hub when the axle shaft is removed.

With the start of production on March 2, 2020, the fasteners used to assemble the non-Airliner rear suspension (bogie) crossmember have changed. The rear suspension bogie crossmember gussets to the C-channel will be assembled with 5/8 - 18 fasteners. This change includes a revision to a higher friction nut that requires an increase in tightening torque. The new higher friction nut can be identified by its green color.

This service bulletin replaces the version dated 05/01/2016. This bulletin is updated to include the parts list. Some vehicles may exhibit a lean (right or left) due to weight difference on the front suspension. While this does not affect the operation of the vehicle, it may be visually unpleasing to many customers. To correct this condition, replace the existing front axle spacer on the low side of the vehicle with a thicker one.

This bulletin replaces the version dated 06/29/2020. Two new illustrations have been added to demonstrate proper application of butterfly tie straps on the transmission. ---Allison transmission wiring harness chafing causes disruption to gear engagement and fault code generation. To reduce chafing, the wiring is routed using stand off brackets and tie straps to minimize contact with the transmission parts. This bulletin applies to vehicles equipped with on-board diagnostics (OBDs) manufactured after 2016.

Revisions are in blue. With Mascot now in partnership with Detroit Reman and Alliance Parts, DTNA is pleased to announce that Mascot coverage has been added to OWL. Remanufactured Alliance/Mascot parts include transmission, differential, steering gear, and steering pump used in an on-highway vehicle applications. The Alliance/Mascot aftermarket warranty coverage period has not changed: depending on the part, coverage is for one (1) or two (2) years and current parts, labor, and reimbursement policies apply.

With Mascot now in partnership with Detroit Reman and Alliance Parts, DTNA is pleased to announce that Mascot coverage has been added to OWL. Remanufactured Alliance/Mascot parts include transmission, differential, steering gear, and steering pump used in an on-highway vehicle applications. The Alliance/Mascot aftermarket warranty coverage period has not changed: depending on the part, coverage is for one (1) or two (2) years and current parts, labor, and reimbursement policies apply.

Allison transmission wiring harness chafing causes disruption to gear engagement and fault code generation. To reduce chafing, the wiring is routed using stand off brackets and tie straps to minimize contact with the transmission parts. This bulletin applies to vehicles equipped with on-board diagnostics (OBDs) manufactured after 2016.

It has been determined that a change in the procedure is necessary. A second Important Campaign Information letter will be posted when the changes have been made and the campaign is reactivated.

Due to various software changes and fixes, vehicles will require DiagnosticLink 8.12 to perform functional programming. Failure to use this version may cause errors, incomplete programming, and poor vehicle performance. Because of this, all DiagnosticLink 8.09 installed versions will be disabled as of Thursday, July 23, 2020.

Effective for repair orders opened on or after April 27, 2020, if an Authorized Service Location installed a part which later has a warrantable failure, progressive damage and labor may be covered under the Aftermarket Parts Limited Parts Warranty (Parts Warranty).

DTNA is pleased to announce that handling will increase to 33% for Misc. Replacement Part type claims filed under the Over the Counter (OTC) Aftermarket Parts Replacement Program.

Some Business Class M2 106 vehicles built from January 2017 through June 2021 may have a heater hose installed too close to the electric horn.

Freightliner 108SD/114SD, Coronado, New Cascadia, and Business Class M2 vehicles and Western Star 4700 and 4900 vehicles equipped with a certain tire rating have the wrong Component GWR label. DTNA is requesting the current Component GWR label be replaced with the correct label.