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Service bulletins for the 2004 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.

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

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Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
0506040142005-05-13. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. DIAGNOSTIC AIDS FOR DIAGNOSTIC TROUBLE CODES P0440, P0455 AND/OR P0442 - EVAPORATIVE EMISSION (EVAP) SYSTEM LEAK. *TT
33302005-05-11. Service bulletin. ENGINE AND ENGINE COOLING. SERVICE ENGINE SOON (SES) LIGHT DUE TO A P0171 DIAGNOSTIC TROUBLE CODE. *TT
32322005-05-11. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. 1999 - 2005 GEN II COLD ENGINE MISFIRE AT IDLE WITH POSSIBLE P0171 AND/OR P0174. *TT
0406040902005-04-19. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SERVICE ENGINE SOON (SES) LIGHT ON, DIAGNOSTIC TROUBLE CODE (DTC) P0483. *TT
050620042005-04-13. Service bulletin. ENGINE AND ENGINE COOLING. S ENGINE POSSIBLE FALSE CODE DTC P0172. *EH
070820042005-04-12. Service bulletin. ENGINE AND ENGINE COOLING. HIGHER THAT PERCEIVED NORMAL ENGINE COOLANT TEMPERATURE GAUGE READINGS WHEN OPERATING THE VEHICLE IN VERY HIGH OUT SIDE AMBIENT TEMPERATURES AND IN STOP AND GO OR SLOW MOVING TRAFFIC CONDITIONS. *EH
0406040762005-03-12. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. INFORMATION ON UNSTABLE/ROUGH/LUMPY ENGINE IDLE, AND LOW SPEED VEHICLE SURGE, RANDOM DISTURBANCE OR VEHICLE SHUDDER. *TT
0406030022005-03-11. Service bulletin. ENGINE AND ENGINE COOLING. DIAGNOSTIC INFORMATION FOR INTERMITTENT VEHICLE NO CRANK DEAD BATTERY. *EH
0406040432005-02-16. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. UNABLE TO RESET ENGINE OIL LIFE MONITOR. *TT
0406040382005-02-15. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SERVICE ENGINE SOON LIGHT ON, P1680. *TT
0406040532005-02-14. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SERVICE ENGINE SOON LIGHT ON P0133, P0172. *TT
0406010222005-02-14. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. NEW CYLINDER BORE LINER/PISTON SLEEVE REPLACEMENT PROCEDURE. *TT
32092005-02-01. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. EXHAUST MOAN AT IDLE OR PARKING LOT MANEUVERS. *EH
0406020052005-01-11. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. HIGHER THAN NORMAL ENGINE COOLANT TEMPERATURE GAUGE READINGS. *TT
31502004-12-01. Service bulletin. ENGINE AND ENGINE COOLING. CYLINDER LINER REPLACEMENT INFORMATION - INLINE TRUCK ENGINES. *EH
30562004-11-17. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. CHECK ENGINE LIGHT WITH A P0300 DUE TO 2-4 CYLINDERS MISFIRING ON THE SAME BANK OF THE ENGINE. *TT
31542004-11-09. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. MISFIRE, BUMP OR MULTIPLE BUMPS AFTER A 1-2 UPSHIFT. *TT
31422004-11-05. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. BROKEN HEAD BOLT REPAIR. *TC
30772004-10-15. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN. TICK NOISE AT IDLE. *TT
30762004-10-13. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. REPLACEMENT GOODWRENCH ENGINES - PARTS WHICH MUST BE SWAPPED FROM ORIGINAL ENGINE. *TT
010120042004-10-07. Service bulletin. ENGINE AND ENGINE COOLING. HIGH COOLANT TEMPERATURE GAUGE READINGS DURING LOW RPM OPERATION. *TT
30862004-10-04. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. WHISTLE NOISE FROM THE THROTTLE BODY AREA ON LIGHT THROTTLE ACCELERATION ON VEHICLES WITH GEN III ENGINES AND ELECTRONIC THROTTLE. *TT
30182004-08-23. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE CYLINDER HEAD CUP PLUG COOLANT LEAK. *MJ
0406030052004-08-13. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:ENGINE. PROPER CONNECTION INFORMATION TO AVOID BLOWN 125 AMP FUSE AND VARIOUS INTERIOR ELECTRICAL SYSTEM CONDITIONS WHEN JUMP STARTING VEHICLE. *TT
0406010032004-08-13. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. INFORMATION ON 2ND DESIGN BALANCER HUB. *TT

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