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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
05090022005-08-17. Service bulletin. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER. REVISED FRONT BRAKE CALIPER BRACKET MOUNTING BOLT FASTENER TIGHTENING SPECIFICATION (SERVICE MANUAL REVISION). *TT
05110042005-08-16. Service bulletin. EXTERIOR LIGHTING. EXTERIOR LAMP CONDENSATION AND REPLACEMENT GUIDELINES. *TT
05040032005-08-16. Service bulletin. ELECTRICAL SYSTEM. DIAGNOSTIC INFORMATION ON HEADLAMPS FLICKER OR MOMENTARILY DIM WHILE DRIVING. *TT DIAGNOSTIC INFORMATION TO CLARIFY EFFECT OF SECONDARY AIR INJECTION SYSTEM ON HEADLAMP FLICKER. *TT
05090032005-08-16. Service bulletin. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER. REVISED REAR BRAKE CALIPER BRACKET MOUNTING BOLT FASTENER SPECIFICATION (SERVICE MANUAL REVISION). *TT *SC
05050072005-08-04. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). GUIDELINES FOR REPLACEMENT OF TRANSFER CASE CONTROL MODULE (TCCM). *TT
05100012005-07-08. Service bulletin. STEERING. STEERING SYSTEM MOAN, GROAN, SHUDDER AND/OR VIBRATION TYPE NOISE DURING LOW SPEED TURNING MANEUVERS. *TT
05110022005-07-08. Service bulletin. STRUCTURE:BODY. THE CENTER HIGH-MOUNT STOP LAMP (CHMSL) APPLIQUE IS LOOSE ON THE LIFT-GATE GLASS. *TT
0506040212005-05-14. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. REVISED INSPECTION/MAINTENANCE (I/M) EVAPORATIVE EMISSION (EVAP) SYSTEM SET PROCEDURE. *TT
05130032005-05-10. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. ONSTAR SYSTEM INOPERATIVE ONSTAR SYSTEM STATUS LIGHT IS RED RADIO LOCKED IN PHONE MODE OR DTC B1000. *EH
05030012005-05-10. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. REVISED INSPECTION MAINTENANCE EVAPORATIVE EMISSION SYSTEM SET PROCEDURE. *EH
05110082005-05-10. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:REAR WINDOW. RECONNECTION OF REAR WINDOW DEFROSTER CONTACT OR TAB. *EH
05110022005-05-10. Service bulletin. STRUCTURE:BODY:DOOR. DOOR HARD TO CLOSE. *EH
05130022005-05-10. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. COMPACT DISC PLAYER SKIPPING INOPERATIVE SLUGGISH AND OR LONG SEARCH TIMES. *EH
05130012005-05-10. Service bulletin. ELECTRICAL SYSTEM. ERROR CODES ON RADIO DISPLAY THEIR CAUSE AND CORRECTIVE ACTION. *EH
05120022005-05-10. Service bulletin. ELECTRICAL SYSTEM. AUTOMATIC DUAL ZONE HVAC BATTERY DRAW. *EH
05120012005-05-10. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. INTERMITTENT A/C PERFORMANCE CONCERNS IN HIGH AMBIENT TEMPERATURES AND OR HIGH HUMIDITY CONDITIONS ESPECIALLY AT LOW ENGINE SPEEDS. *EH FINAL RELEASE. *TT
05110022005-05-10. Service bulletin. VISIBILITY:GLASS, SIDE/REAR. DISTORTIOPN IN OUTER SURFACE OF VEHICLE GLASS. *EH
05050042005-05-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. SHIFT STABILIZATION FEATURE FOR HYDRAMATIC 4L60E TRANSMISSION. *EH
05050032005-05-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. AUTOMATIC TRANSMISSION SHIFT LOCK CONTROL FUNCTION. *EH
05020012005-05-10. Service bulletin. FUEL SYSTEM, OTHER. PERCEIVED FUEL ECONOMY AND DRIVER INFORMATION CENTER SETTING. *EH
05010032005-05-10. Service bulletin. ENGINE AND ENGINE COOLING. NEW SPARK PLUGS AND GAPPING. *EH
05110032005-05-10. Service bulletin. AIR BAGS. PROPER AIR BAG SYSTEM DIAGNOSIS AND SERVICE. *EH
05050022005-05-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. DIAGNOSIS OF CRACK OR BROKEN TRANSMISSION CASE. *EH
05010042005-05-10. Service bulletin. ELECTRICAL SYSTEM. SERVICE ENGINE SOON LIGHT ON DIAGNOSTIC TROUBLE CODE P0483. *EH
05040012005-05-10. Service bulletin. ELECTRICAL SYSTEM. VARIOUS INTERIOR ELECTRICAL CONCERNS IP GAUGES LIGHTING INOPERATIVE HVAC CONTROLS INOPERATIVE BLOWER MOTOR INOPERATIVE RADIO INOPERATIVE FLASHER INOPERATIVE. *EH

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