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Service bulletins for the 2003 Isuzu Ascender

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.

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

By type

By component

By trouble code

Bulletins, newest first
07040032008-01-19. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). ERRATIC SPEEDOMETER OPERATION OR SPEEDOMETER NEEDLE SHAKES ABOVE 60 MPH. *NJ
07110152007-10-30. Service bulletin. LATCHES/LOCKS/LINKAGES:HATCHBACK/LIFTGATE:LOCK. REAR LIFTGATE GLASS MAY NOT LOCK WHEN USING REMOTE KEYLESS ENTRY (RKE) KEY FOB TRANSMITTER/DOOR LOCK SWITCH, LIFTGATE HATCH OR LIFTGATE GLASS MAY LOCK/UNLOCK WHEN REAR LIFTGATE GLASS BUTTON DEPRESSED. *NJ
05110012007-10-30. Service bulletin. EQUIPMENT:OTHER:LABELS. CENTER HIGH-MOUNT STOP LAMP (CHMSL) APPLIQUE LOOSE. *NJ
07010022007-10-29. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. INFORMATION ON NEW IN-VEHICLE SERVICE PROCEDURE FOR REMOVAL/INSTALLATION OF LL8 CYLINDER HEAD. *NJ
06050012007-10-29. Service bulletin. ELECTRICAL SYSTEM:WIRING. SERVICE 4WD LIGHT ILLUMINATED, DTC C0374 SET. *NJ
07050042007-09-12. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION. INFORMATION ON 2-3 UP-SHIFT OR 3-2 DOWNSHIFT CLUNK NOISE IS HEARD. *KB
07090022007-08-20. Service bulletin. SERVICE BRAKES, AIR:ANTILOCK:ABS WARNING LIGHT. ABS LIGHT ON, DTC'S C0265, C0201, U1041 SET AND / OR LOSS OF COMMUNICATION WITH BRAKE MODULE. *KB
07040022007-06-07. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. PRNDL DISPLAY REDUCED VISIBILITY FOR APPROXIMATELY ONE MINUTE. *KB
07100012007-05-10. Service bulletin. STEERING. RELEASE OF STEERING GEAR STUB SHAFT BEARING KIT FOR SERVICE. *KB
07110032007-05-10. Service bulletin. STRUCTURE:BODY:DOOR. DOORS ARE HARD TO CLOSE. *KB
07020012007-04-06. Service bulletin. FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM. VARIOUS DRIVEABILITY SYMPTOMS DUE TO CLOGGED FUEL INJECTORS, MIL DTC'S P0171, P0172, P0174, P0300, P1174, AND P1175. *KB UPDATED 08-03-07. *KB
07110012007-04-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. 4.2L LL8 ENGINE - FLASHING AND/OR MIL LIGHT, ROUGH IDLE, MISFIRES DTC'S P0300, P0301, P0302, P0303, P0304, P0305, P0306. *KB
06110152007-02-22. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. NOISE COMING FROM INSTRUMENT PANEL CLUSTER. *KB
06050042007-02-22. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. DIAGNOSTIC TROUBLE CODE (DTC) P0757 SET, MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATED, POOR PERFORMANCE OF TRANSMISSION, TRANSMISSION SLIPPING. *KB
06110072007-02-22. Service bulletin. VISIBILITY:POWER WINDOW DEVICES AND CONTROLS. DISTORTION IN OUTER SURFACE OF VEHICLE GLASS. *KB
06080022007-02-22. Service bulletin. TIRES. TIRE CHARACTERISTICS OF ORIGINAL EQUIPMENT TIRES. *KB
06120032006-12-28. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. LOSS OF BLOWER MOTOR SPEEDS EXCEPT FOR LOW SPEED OR INOPERATIVE. MANUAL TEMP CONTROL, OR HEATER ONLY. *KB
06060032006-11-14. Service bulletin. SUSPENSION. REVISED SHOCK MODULE REPLACEMENT (SERVICE MANUAL REVISION). *KB
06110122006-11-09. Service bulletin. STRUCTURE:BODY:HATCHBACK/LIFTGATE. REAR LIFTGATE BINDS, IMPROPER FIT. THIS MAY BE CAUSED BY BROKEN WELDS OR CRACKS THAT FORMED AROUND THE INNER TWO WELDS. *KB
06050052006-09-19. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. INFORMATION REGARDING AUTOMATIC TRANSMISSION SHIFT LOCK CONTROL FUNCTION. *TT
04040042006-08-04. Service bulletin. ELECTRICAL SYSTEM. PROPER CONNECTION INFORMATION TO AVOID BLOWN 125 AMP FUSE AND VARIOUS INTERIOR ELECTRICAL SYSTEM CONDITION WHEN JUMP STARTING VEHICLE. *TT
0604S0012006-08-01. Service bulletin. ELECTRICAL SYSTEM. DIAGNOSTIC INFORMATION TO CLARIFY EFFECT OF SECONDARY AIR INJECTION SYSTEM ON HEADLAMP FLICKER. *TT
06010012006-05-17. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. OPERATING CHARACTERISTICS OF THE ELECTRO-VISCOUS (EV) FAN CLUTCH AND DIAGNOSTIC TIPS FOR COOLING FAN NOISE, DELAYED TRANSMISSION SHIFTS AND/OR ENGINE REVVING TOO HIGH. *TT
06040032006-05-17. Service bulletin. ELECTRICAL SYSTEM. INTERMITTENT NO CRANK, NO START. *TT
05050132006-04-27. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. DIAGNOSTIC TIPS FOR AUTOMATIC TRANSMISSION DTC P0756. *TT

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