# Service bulletins for the 2008 Mack CHN

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

80 bulletins from NHTSA, as of 2026-10-19.

- [CBR 2573\-1 202604](/bulletins/11032092.md), 2026-05-05, Service bulletin: POWER TRAIN. CBR \- Mack Chassis \- Through Shaft Bearing Retainer Breakage On Mack Carriers.
- [CBR 2362\-3 202604](/bulletins/11032086.md), 2026-05-04, Service bulletin: POWER TRAIN. CBR \- Mack Carrier Nut Adhesive Change.
- [CBR 820\-9 202601](/bulletins/11028051.md), 2026-02-03, Service bulletin: ENGINE; VEHICLE SPEED CONTROL. CBR \- Mack Chassis \- Engine Brake Only Works With The Brake Pedal, No Function During Cruise. US07 And Newer Emissions, Model Year 2008 And Newer.
- [CBR 407 072025](/bulletins/11021333.md), 2025-08-04, Service bulletin: SERVICE BRAKES; ELECTRICAL SYSTEM. CBR \- To correct the MID136 SID 66 FMI 7 fault code the latest Bendix VCP file will need to downloaded.
- [CBR 2488 072025](/bulletins/11021332.md), 2025-08-04, Service bulletin: ELECTRICAL SYSTEM. CBR \- A significant GPS reporting issue is affecting fleet operations, with trucks maintaining back\-office communication but failing to transmit GPS location data.
- [CBR\-407 202409](/bulletins/11008366.md), 2024-10-03, Service bulletin: SERVICE BRAKES. CBR: To correct the MID136 SID 66 FMI 7 fault code the latest Bendix VCP fi le will need to be downloaded.
- [CBR\-2383 202406](/bulletins/11003042.md), 2024-07-03, Service bulletin: UNKNOWN OR OTHER; ELECTRICAL SYSTEM; VEHICLE SPEED CONTROL. CBR \- Accelerator Pedal: Inspection Instructions
- [CBR\-2347 202402](/bulletins/10251331.md), 2024-03-05, Service bulletin: ELECTRICAL SYSTEM. CBR \- Active "Set Park Brake" Message On Drivers Information Display \(DID\).
- [CBR\-202 202402](/bulletins/10251329.md), 2024-03-05, Service bulletin: POWER TRAIN. CBR \- Automated Manual Transmission \( AMT \) Flywheel Pilot Bearing Wear On Input Shaft.
- [M\-465\-001 202311](/bulletins/10246086.md), 2023-12-05, Service bulletin: POWER TRAIN. TSB: Mack Trucks now offer an improved HD Inter\-Axle Through Shaft for the CRD 125, 150, 180, and 200 family carriers. 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.
- [M728\-005A 202308](/bulletins/10241946.md), 2023-09-06, Service bulletin: SUSPENSION. TSB: Barksdale Leveling Valve, Leak Test
- [KC\-474\-Ver5](/bulletins/10237342.md), 2023-06-05, Service bulletin: POWER TRAIN. CBR: Diagnostic Trouble Code \(DTC\) P215A\-64, Fault Code SPN 84 FMI 19
- [KC\-614\-Ver4](/bulletins/10237339.md), 2023-06-05, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. CBR: eWarranty To UCHP Labor Code \( SCC Code \) Crossover, Conversion Information For Use With Campaigns \( FI, PI \) And Recalls \( EC, SC \), Location On Trucks Dealer Portal \( TDP \)
- [M\-251\-008](/bulletins/10225632.md), 2022-11-03, Service bulletin: ENGINE AND ENGINE COOLING. 2008 document reformated to be published as a TSB in Impact. Intake mounting hardware.
- [M\-265\-002](/bulletins/10222608.md), 2022-10-06, Service bulletin: ENGINE AND ENGINE COOLING. TSB\-Charge Air Cooler t\-clamp install.
- [M\-451\-001](/bulletins/10219059.md), 2022-09-01, Service bulletin: STRUCTURE; SUSPENSION:FRONT; POWER TRAIN:DRIVELINE. 2007 Document reformatted to be published as a TSB in Impact. Updated Crossmember for improved clearance.
- [M\-711\-002](/bulletins/10219058.md), 2022-09-01, Service bulletin: STRUCTURE:FRAME AND MEMBERS:UNDERBODY SHIELDS; STRUCTURE. 2008 Document reformated to be published as a TSB in Impact. Frame reinforcement plate.
- [M\-711\-001](/bulletins/10219057.md), 2022-09-01, Service bulletin: SUSPENSION:REAR; SUSPENSION. 2008 Document reformatted to be published as a TSB in Impact. Rear Suspension Repair.
- [KC\-2112](/bulletins/10215315.md), 2022-07-05, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN; ENGINE AND ENGINE COOLING. Programming Failure \- Chassis With Cummins Engine And An Allison Transmission
- [KC\-2143](/bulletins/10215312.md), 2022-07-05, Service bulletin: VEHICLE SPEED CONTROL. \(Back Office\) \- Cruise Control Inoperative After Updating Software VECU5 Without ESP Package \(UESP\).
- [KC\-405](/bulletins/10215295.md), 2022-07-05, Service bulletin: POWER TRAIN. Warranty Automated Manual Transmission \( AMT, I\-Shift, mDrive \) Control Housing Assembly; Guidelines For Filing A Claim For Chassis Return Visit With Transmission Issues After A Repair Requiring Control Housing Removal And Reinstallation \- US07 And N.
- [KC\-750](/bulletins/10215287.md), 2022-07-05, Service bulletin: ENGINE AND ENGINE COOLING. US10 Emission Engines \- Diagnostic Trouble Code \( DTC \) SPN 1231 FMI 9 Troubleshooting.
- [KC\-663](/bulletins/10213658.md), 2022-06-07, Service bulletin: ENGINE AND ENGINE COOLING. Emcon \(Spark Assist\) Engine Aftertreatment System Troubleshooting Check Sheet \- US07 Emissions
- [KC\-653](/bulletins/10213652.md), 2022-06-07, Service bulletin: ENGINE AND ENGINE COOLING. Low Oil Pressure Diagnostic Process For 11 Liter Engines
- [KC\-644](/bulletins/10213651.md), 2022-06-07, Service bulletin: ENGINE AND ENGINE COOLING. Manual Compression Test Adapter For Engines With Stainless Steel Injector Sleeves \(Conical Tip Injectors\) \- US07 And Newer Emissions, Model Year 2008 And Newer

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