Service bulletins for the 1999 Isuzu Trooper
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.
20 on file from NHTSA, as of 2026-10-19.
About P1640 on the 1999 Isuzu Trooper: what the code means, and the bulletins and recalls about the same components.
By type
By component
By trouble code
Only bulletins with trouble code: P1640 are shown. Show all
| IB0004S005 | 2001-01-28. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). THIS BULLETIN PROVIDES INFORMATION ON THE P1640 AND P1650 OUTPUT DRIVE CODES WHICH REFER TO OUTPUT DRIVER CIRCUIT CONDITIONS RELATED TO THE PCM. *TT |
|---|
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.