WenmarOpen by Wenmar Pro

Service bulletins for the 2004 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.

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

By type

By component

By trouble code

By topic

Bulletins, newest first
0413S0012004-10-19. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. POP NOISE HEARD FROM THE REAR SPEAKERS WHEN REAR SEAT AUDIO (RSA) IS TURNED ON OR OFF. *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
0405S0072004-10-19. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). DIAGNOSTIC TROUBLE CODE C0379 SET, SERVICE 4WD LIGHT ON, 4WD INOPERATIVE. *TT
0411S0032004-07-30. Service bulletin. STRUCTURE:BODY. REAR LICENSE PLATE POCKET GASKET LOOSE OR OUT OF POSITION. *TT
0411S0012004-07-30. Service bulletin. EQUIPMENT:OTHER:LABELS. INCORRECT PAINT CODE LISTED ON SERVICE PARTS IDENTIFICATION LABEL. *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
0412S0052004-07-20. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. HVAC CONTROL MODULE MEMORY FUNCTIONS ELIMINATION OF CLIMATE CONTROL PERSONALIZATION FEATURE. *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
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
0401S0012004-05-07. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. REVISED DIAGNOSTIC TROUBLE CODE (DTC) P2135 (SERVICE MANUAL REVISION). *TT
0411S0012004-05-07. Service bulletin. STRUCTURE:BODY:DOOR. FRONT DOOR A-PILLAR WATER INTRUSION. *TT
0404S0012004-05-07. Service bulletin. ELECTRICAL SYSTEM. REPLACEMENT OF MIRROR ACTUATOR. *TT
0412S0042004-05-07. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. REAR HEATER & AIR CONDITIONING (A/C) PIPE REPLACEMENT/REPAIR. *TT
04050022004-05-07. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. INFORMATION ON 2-3 UP-SHIFT OR 3-2 DOWNSHIFT CLUNK SOUND. *TT
0412S0032004-05-07. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. J44551 AIR CONDITIONER SUCTION SCREEN KIT REPAIR RECOMMENDATIONS AND PROCEDURES AFTER COMPRESSION FAILURES. *TT
0405S0022004-04-16. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). INOPERATIVE 4WD/AWD LAMP AND SYSTEM. *TT
0301S0042003-10-07. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. REVISED DIAGNOSTIC TROUBLE CODE (DTC) P0336 (ENGINE CONTROL SECTION OF THE SERVICE MANUAL). *TT THIS BULLETIN SUPERSEDES SB03-01-S004 DATED 08/01/2003. *TT
0306040332003-09-29. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. REVISED DIAGNOSTIC TROUBLE CODE P0336. *TT UPDATE. TO INCLUDE 2004 ISUZU NQR COMMERCIAL MODELS. *TT

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