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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
05010022005-05-10. Service bulletin. ELECTRICAL SYSTEM. SERVICE ENGINE SOON LIGHT ON. *EH
0313S0022005-04-22. Service bulletin. UNKNOWN OR OTHER. TRAILER WEIGHT AND GCWR INFORMATION. *TT
0312S0012005-04-22. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. A/C INOPERATIVE/INTERMITTENT, A/C BLOWS WARM AIR. *TT
0511S0052005-04-20. Service bulletin. STRUCTURE:BODY:HATCHBACK/LIFTGATE. LIFTGATE OR LIFTGATE GLASS BINDS, DOES NOT OPEN COMPLETELY, CHMSL HITS ROOF. *TT
0405230032005-03-08. Service bulletin. SERVICE BRAKES, AIR:DISC:CALIPER. REVISED REAR BRAKE CALIPER BRACKET MOUNTING BOLT FASTENER SPECIFICATION. *EH
0405S0072004-11-05. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. DIAGNOSTIC INFORMATION ON HARSH 1-2 UPSHIFT. *NM
0402S0042004-11-03. Service bulletin. FUEL SYSTEM, OTHER. VEHICLE IS DIFFICULT TO FILL WITH FUEL OR FILLING STATION PUMP SHUTS OFF BEFORE TANK IS FULL OR FUEL SPITS BACK/OUT WHEN FILLING THE TANK. *TT
0412S0062004-10-19. Service bulletin. EQUIPMENT. POOR HEATER PERFORMANCE 2ND AND 3RD ROW SEATS. *TT
0411S0042004-10-19. Service bulletin. STRUCTURE:BODY. LIFTGATE GLASS UNLATCHES ON ROUGH/BUMPY ROAD SURFACES. *TT
0410S0022004-10-19. Service bulletin. STEERING. RELEASE OF STEERING GEAR STUB SHAFT BEARING KIT FOR SERVICE. *TT
0405S0082004-10-19. Service bulletin. POWER TRAIN. DIAGNOSTIC INFORMATION ON DIAGNOSTIC TROUBLE CODE P0894 AND P1870. *TT
0405S0092004-10-19. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. DIAGNOSTIC TROUBLE CODE P0757 SET, SERVICE ENGINE SOON ILLUMINATED, POOR PERFORMANCE OF TRANSMISSION, TRANSMISSION SLIPPING. *TT
0411S0032004-07-30. Service bulletin. STRUCTURE:BODY. REAR LICENSE PLATE POCKET GASKET LOOSE OR OUT OF POSITION. *TT
04050052004-07-30. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. DIAGNOSTIC TIPS FOR DIAGNOSTIC TROUBLE CODE (DTC) P0756 2-3 SHIFT VALVE PERFORMANCE. *TT
0404S0032004-07-30. Service bulletin. ELECTRICAL SYSTEM. LOW VOLTAGE DISPLAY ON (IP) INSTRUMENT PANEL GAUGE, LIGHTS DIM AT STOP LIGHTS, BATTERY DISCHARGED, NO START, SLOW CRANKING, DIM LIGHTS AT IDLE, LOW GENERATOR OUTPUT. *TT
0413S0012004-07-30. Service bulletin. EQUIPMENT:ELECTRICAL. UTILIZING TECH 2 TO RETRIEVE PART NUMBER FOR RADIOS, COMPACT DISC (CD) CHANGERS AND INSTRUMENT PANEL CLUSTERS (IPC). *TT
0409S0022004-07-20. Service bulletin. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER. REVISED REAR BRAKE CALIPER BRACKET MOUNTING BOLT FASTENER SPECIFICATION. *TT
0401S0022004-07-20. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SERVICE ENGINE SOON/CHECK ENGINE LIGHT ILLUMINATED, MISFIRE OR ROUGHNESS, DIAGNOSTIC TROUBLE CODE P0300 SET. *TT
0405S0042004-07-20. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. AUTOMATIC TRANSMISSION SHIFT, ENGINE DRIVEABILITY CONCERNS OR SERVICE ENGINE SOON (SES) LIGHT ON AS A RESULT OF THE INSTALLATION OF AN AFTERMARKET REUSABLE, EXCESSIVELY OILED AIR FILTER. *TT
0404S0012004-07-19. Service bulletin. ELECTRICAL SYSTEM. NO START OR BATTERY DRAIN CONDITION, AFTER IGNITION SWITCH REPLACEMENT. *TT
04050052004-07-19. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. SHUDDER, ROCKING MOTION, BINDING, FEELS LIKE VEHICLE IS STUCK IN 4WD (CROW HOP) WHEN TURNING AT LOW SPEEDS. *TT
0405S0042004-05-18. Service bulletin. POWER TRAIN. RATTLE SOUND COMING FROM UNDER THE VEHICLE, REPOSITION TRANSMISSION OIL COOLER LINES. *TT
0411S0022004-05-07. Service bulletin. STRUCTURE:BODY. RATTLE SOUND FROM THE FRONT HOOD OF THE VEHICLE. *TT
0402S0022004-05-07. Service bulletin. FUEL SYSTEM, OTHER. MULTIPLE DRIVEABILITY SYMPTOMS DUE TO CLOGGED FUEL INJECTORS. *TT
0410S0012004-05-07. Service bulletin. STEERING. REVISED STEERING WHEEL REPLACEMENT PROCEDURE (SERVICE MANUAL REVISION). *TT

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