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Service bulletins for the 2004 GMC Sierra

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.

927 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
36392006-01-06. Service bulletin. ENGINE AND ENGINE COOLING. OIL PRESSURE GAUGE READING LOW OR NEAR RED ZONE. *TT
0506040632005-11-30. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. LM7, L59 OR L33 ENGINES WITH COLD START ROUGH OR INCORRECT IDLE, MISFIRE, MALFUNCTION INDICATOR LAMP (MIL) OR FLASHING REQUIRING O2 SENSOR REPLACEMENT. *TT
05096100182005-11-10. Service bulletin. ENGINE AND ENGINE COOLING. ACCESSORY DRIVE BELT CHIRP, SQUEAL, OR SQUEAK TYPE NOISE AT COLD IDLE. *TT
0506010142005-11-07. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. OIL LEAK UNDER EXTREME COLD TEMPERATURES (-34 DEGREES C) (-30 DEGREES F) OR COLDER). *TT
05-06-04-0472005-11-05. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SERVICE ENGINE SOON (SES) LIGHT ON WITH REDUCTION IN ENGINE POWER, DIAGNOSTIC TROUBLE CODES P0202 AND P2146 OR P0207 AND P2149 SET. *TT ADD DTC P1294. INSTALL REVISED 90 DEGREE INJECTOR CONNECTOR WITH HARNESS SUPPORT BRACKET SERVICE KIT. UPDATED 7/18/08 *PE
0506040082005-11-03. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. DIAGNOSTIC TROUBLE CODE (DTC) P1172 OR P2636, FUEL GAUGE READS EMPTY, SERVICE ENGINE SOON (SES) LIGHT ON. *TT
0506040292005-11-03. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. FLEXIBLE FUEL (RPO L59) ROUGH IDLE, MISFIRE, MALFUNCTION INDICATOR LAMP DIAGNOSTIC TROUBLE CODE P0300. *TT
33432005-10-28. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE OIL DIPSTICK UNSEATED OR OIL LEAK. *TT
33172005-10-28. Service bulletin. ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:ENGINE. HARD START / NO START OUTSIDE TEMPERATURES BELOW FREEZING. *TT UPDATED 7/13/09. *PE
33142005-10-28. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL. DURAMAX DIESEL ENGINE HARD START, NO START, STALL OF DIAGNOSTIC TROUBLE CODE P0093, P1093. *TT
33122005-10-28. Service bulletin. ENGINE AND ENGINE COOLING. NO START, HARD START, LOSS OF POWER, OR WHITE SMOKE. *TT
3328B2005-10-28. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL. ENGINE RPM SURGE AT 1100 TO 1400 RPM. THIS CONDITION MAY BE NOTICED MORE WHEN TOWING. *TT
33222005-10-28. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. INCORRECT O2 SENSORS AND WIRING HARNESS CAUSING HO2 SENSOR HEATER CIRCUIT CODES P0135 P0141 P0155 P0161. *TT
3256A2005-10-27. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). VEHICLE MAY BE BROUGHT IN FOR SERVICE ENGINE SOON (SES) OR MALFUNCTION INDICATOR LAMP (MIL) LIGHT ON. *TT
32582005-10-27. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. 6.6L LLY ENGINE OIL LEAK AT REAR HOUSING COVER BOLT. *TT
32672005-10-26. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. DIAGNOSTIC TROUBLE CODE P0128 OR ENGINE WILL NOT REACH OPERATING TEMPERATURE. *SC
3048A2005-10-26. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SUPPLEMENT TO 03-06-01-024B 4.3L LU3 L35 TIMING CHAIN TENSIONER. RATTLE-TYPE NOISE COMING FROM THE ENGINE AT APPROXIMATELY 1800 TO 2200 RPMS. *TT
3225A2005-10-26. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL. 01-05 6.6 LLY LB7 DURAMAX DIESEL ENGINE AIR FILTER USAGE. *SC
33942005-10-25. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. 6.6 LLY INJECTOR DRIVER CODES. MISFIRE, ROUGH RUNNING, AND THE MIL/SES LIGHT ON. *SC
35562005-10-18. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. HARD START OR EXTENDED CRANK TIME ON INITIAL COLD START WHEN USING ALCOHOL BLENDED FUELS. *SC
35042005-09-14. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL. HARD START HOT ONLY AFTER THE ENGINE HAS REACHED OPERATING TEMPERATURE AND THEN SHUT OFF. *TT
7022005-09-09. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. DURAMAX AIR FILTER. GM TECH LINKS. *TT
0506040252005-05-14. Service bulletin. ENGINE AND ENGINE COOLING. REVISED DIAGNOSTIC TROUBLE CODE (DTC) U2104. *TT
0506040242005-05-14. Service bulletin. ENGINE AND ENGINE COOLING. REVISED DIAGNOSTIC TROUBLE CODE (DTC) P1172 AND DTC P2636. *TT
0506040232005-05-14. Service bulletin. ENGINE AND ENGINE COOLING. REVISED DIAGNOSTIC TROUBLE CODE (DTC) P2563. *TT

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