P0171 on the 2002 Chevrolet Trailblazer
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
Nobody has written a description of this code yet.
| 3232 | 2005-05-11. Service bulletin. 1999 - 2005 GEN II COLD ENGINE MISFIRE AT IDLE WITH POSSIBLE P0171 AND/OR P0174. *TT |
|---|---|
| 3232 | 2005-01-28. Service bulletin. MISFIRE AT IDLE COLD AND POSSIBLE P0171 AND OR P0174. *EH |
| 3019A | 2004-11-05. Service bulletin. DIAGNOSTIC TROUBLE CODE P0171 . *SC SERVICE ENGINE SOON LIGHT DUE TO DIAGNOSTIC TROUBLE CODE P0171. *TT |
| 1528102 | 2004-08-24. Service bulletin. 02-04 4.2L LL8 DIAGNOSTIC TROUBLE CODE P0171. *MJ |
| 01968A | 2004-06-09. Service bulletin. DIAGNOSTIC TROUBLE CODE (DTC) P0171. *TT |
5 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.