Service bulletins for the 2002 Chevrolet Trailblazer
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.
643 on file from NHTSA, as of 2026-10-19.
About P0171 on the 2002 Chevrolet Trailblazer: 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: P0171 are shown. Show all
| 3232 | 2005-05-11. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. 1999 - 2005 GEN II COLD ENGINE MISFIRE AT IDLE WITH POSSIBLE P0171 AND/OR P0174. *TT |
|---|---|
| 3232 | 2005-01-28. Service bulletin. ENGINE AND ENGINE COOLING. MISFIRE AT IDLE COLD AND POSSIBLE P0171 AND OR P0174. *EH |
| 3019A | 2004-11-05. Service bulletin. UNKNOWN OR OTHER. DIAGNOSTIC TROUBLE CODE P0171 . *SC SERVICE ENGINE SOON LIGHT DUE TO DIAGNOSTIC TROUBLE CODE P0171. *TT |
| 1528102 | 2004-08-24. Service bulletin. ELECTRICAL SYSTEM. 02-04 4.2L LL8 DIAGNOSTIC TROUBLE CODE P0171. *MJ |
| 01968A | 2004-06-09. Service bulletin. ELECTRICAL SYSTEM. DIAGNOSTIC TROUBLE CODE (DTC) P0171. *TT |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.