WenmarOpen by Wenmar Pro

Service bulletins for the 2007 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.

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

By type

By component

By trouble code

Bulletins, newest first
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
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-461-0012011-09-08. Service bulletin. SUSPENSION:REAR:AXLE:NON-POWERED AXLE ASSEMBLY. MACK TRUCKS: REAR AXLE HOUSING REPLACEMENT. *RM
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
SC-3342010-03-04. Service bulletin. SERVICE BRAKES, AIR:SUPPLY:CHECK VALVE. MACK TRUCK: IT HAS BEEN DETERMINED THAT THE 90 DEGREE SINGLE CHECK VALVE FITTING MANUFACTURED BY PARKER HANNIFIN CORP. WHICH IS USED IN THE SUPPLY PORT OF THE SPRING BRAKE MODULATING RELAY VALVE (BENDIX SR 7 VALVE) MAY HAVE A DEFECT WHEREBY THE VALVE BODY RETAINER MAY BECOME EXCESSIVELY WORN AND EVENTUALLY BREAK APART. MODELS CXU, CXP, CXN, CHU, CHN, GU, CTP, CT, CV, MRU, AND LEU. 1/1/04-11/3/05 AND 5/2/07-7/26/07. *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
SB-26-10182009-05-22. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. MACK TRUCKS: MERITOR WABCO AIR COMPRESSOR, CONVENTIONAL REPAIR FOR CERTAIN AIR COMPRESSOR FAILURES, SUCH AS FAILURE OF COMPRESSOR TO PUMP, SLOW AIR SYSTEM PRESSURE BUILD UP TIME, INTERMITTENT COMPRESSOR PUMPING, ETC, WAS TO REPLACE COMPRESSOR CYLINDER HEAD. MODEL YEARS UNKNOWN. *PE
SB-12-10432009-01-13. Service bulletin. SUSPENSION:REAR; SUSPENSION. MACK TRUCK: SUSPENSION CROSSMEMBERS, PRIMAAX REAR SUSPENSION. MODELS EQUIPPED WITH THE HENDRICKSON PRIMAAX REAR AIR SUSPENSION MAY DEVELOP A CRACK IN THE RADIUS OF THE LOWER END GUSSET. *PE
SB-1210422008-09-13. Service bulletin. STRUCTURE:FRAME AND MEMBERS. MACK TRUCK: CRACKS IN UPPER FRAME FLANGE AT STEERING GEAR CUT-OUT - ALL CHN MODELS. (NOT APPLICABLE TO MACK TRUCKS AUSTRALIA). *PE
1210312006-09-21. Service bulletin. SUSPENSION. SUSPENSION CROSSMEMBERS - CXN AND CHN MODELS EQUIPPED WITH MACK AL SUSPENSION. *TT
1220032006-09-12. Service bulletin. STRUCTURE:FRAME AND MEMBERS:UNDERBODY SHIELDS. FRAME TIE BAR MOUNTING BRACKETS - CHN MODEL CHASSIS. MACK. *TT

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