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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

Only bulletins with component: Transfer case are shown. Show all

Bulletins, newest first
05050052005-09-12. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). SERVICE 4WD LIGHT ILLUMINATED, DIAGNOSTIC TROUBLE CODE (DTC) C0374 SET. *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
0405S0022004-04-16. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). INOPERATIVE 4WD/AWD LAMP AND SYSTEM. *TT

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