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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 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Bulletins, newest first
KC-1242021-11-05. Service bulletin. POWER TRAIN. Automated Manual Transmission Gearbox Will Not Shift To High Range After Gearbox Repair; MID 130 PSID 24 FMI 1, P1072-92 Unintentional Disengagement Of High Range - US07 And Newer Emissions, Model Year 2008 And Newer
FSB 491-0322021-04-05. Service bulletin. EQUIPMENT; POWER TRAIN. Transmission Oil Cooler Hose, Replacement
K318223252020-01-13. Service bulletin. POWER TRAIN; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Mack Chassis - Differential Carrier Models CRD 125 And CRD 150 - New Differential Axle Seal Installation Tool; New Tool Required For New Input And Output Seal Installation
K120342412019-02-19. Service bulletin. ENGINE. Diagnosing Performance Complaints ASET Engine
K127418842019-02-19. Service bulletin. ELECTRICAL SYSTEM. V-MAC III Service Software Displays Runtime Error 400 - Form Already Displayed (Modality)
K594030062019-02-19. Service bulletin. ELECTRICAL SYSTEM. V-MAC - DP - Error message #34 - Software Doesn't Match What Is In The ECU
K357244852019-02-19. Service bulletin. ELECTRICAL SYSTEM. V-MAC DP - Error message #13 - Access Denied, Password Incorrect
K445206452019-02-19. Service bulletin. ELECTRICAL SYSTEM. V-MAC - Error message #10 - Password Mismatch
K338644412019-02-19. Service bulletin. ELECTRICAL SYSTEM. V-MAC - Vehicle Configeration Parameters Recovery
K323982902019-02-19. Service bulletin. ELECTRICAL SYSTEM. V-MAC III - PTO Does Not Operate
K751153062019-02-19. Service bulletin. ENGINE AND ENGINE COOLING. V-MAC III Engine Cranks But No Start
K005391042019-02-19. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. V-MAC - Speedometer Not working After Reprograming
K103558802019-02-19. Service bulletin. ENGINE AND ENGINE COOLING. V-MAC III - Severe Engine Stumble
K837415262019-02-19. Service bulletin. ENGINE AND ENGINE COOLING. V-MAC - Jacobs Engine Brake Works Intermittently Between 2000 To 2100 RPM
K261117302019-02-19. Service bulletin. EQUIPMENT:ELECTRICAL. V-MAC III - Smart Fan Will Not Disengage
K726145482018-03-19. Service bulletin. ELECTRICAL SYSTEM. Diagnostic Trouble Code ( DTC ) P02FA Illuminating The Malfunction Indicator Lamp (MIL) - US17 (GHG17, Common Rail Fuel System) Chassis ONLY
K010503032018-03-19. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Diagnostic Trouble Code ( DTC ) P0471 Illuminating The Malfunction Indicator Lamp (MIL) - US17 (GHG17, Common Rail Fuel System) Chassis ONLY
K043423272018-03-19. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Diagnostic Trouble Code ( DTC ) P0420 Illuminating The Malfunction Indicator Lamp (MIL) - US17 (GHG17, Common Rail Fuel System) Chassis ONLY
K585577842018-03-19. Service bulletin. FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM. Fuel Injector Offset Learning Diagnostic Trouble Codes ( DTC ) / Fault Codes Logged In Engine Control Module ( EMS ); Possible Rough / Uneven Idle - OBD15 Chassis
PI-07802012-06-13. Service bulletin. SUSPENSION:REAR:SPRINGS:LEAF SPRING ASSEMBLY:U-BOLT, LEAF SPRING TO AXLE. MACK: DURING EXTREME DOWNWARD ARTICULATION OF REAR AXLE, THE AIR SPRING MAY SEPARATE AT MOUNTING BELL. *PE
FSB-437-0012012-02-22. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER. MACK TRUCK: THE EASY INSTALLATION OF ALLISON TRANSMISSION AND PREVENTING BINDING OF TORQUE CONVERTER PILOT DURING THERMAL EXPANSION CYCLE OF NORMAL OPERATION BY USING HIGH TEMPERATURE MOLYBDENUM DISULFIDE GREASE. *PE
FSB-491-0292011-09-09. Service bulletin. UNKNOWN OR OTHER. MACK TRUCKS: THERE ARE CRACKS IN A STEEL OIL TUBE THAT CAN LEAD TO LEAKING. *RM UPDATED 2/21/12. *PE
FSB-214-0242011-08-15. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. MACK TRUCKS: THERE IS REVISED MOUNTING HARDWARE FOR THE EXHAUST MANIFOLD AND TURBOCHARGER. *RM
SB-6310022010-03-10. Service bulletin. VISIBILITY:WINDSHIELD. MACK TRUCK: WINDSHIELD INSTALLATION (ROPE-PULL METHOD)-CXU, CHU, GU, CXP, CTP, CXN, CHN, CX, CH, CT, CV AND CL MODELS. MACK TRUCKS NOW USES A ROPE PULL WINDSHIELD GLASS INSTALLATION METHOD ON CURRENT PRODUCTION CONVENTIONAL MODELS. THIS PROCEDURE, WHICH HAS BEEN USED SUCCESSFULLY IN EUROPE FOR A NUMBER OF YEARS, WILL SIMPLIFY SERVICE PROCEDURES WHILE AT THE SAME TIME ENSURING A LEAK FREE FIT. *PE
TSB-5170092009-08-27. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. MACK TRUCK: BROKEN LONGITUDINAL TORQUE ROD MOUNTING STUD IN AXLE SPRING SEAT DUE TO WING BRACKET INTERFERENCE. THIS INCLUDES THE TD MODEL. NO MODEL YEARS LISTED. *PE

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.