Service bulletins for the 2004 Hummer H2
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.
748 on file from NHTSA, as of 2026-10-19.
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Only bulletins with component: Engine are shown. Show all
| PIP-4138K | 2011-06-08. Service bulletin. ENGINE AND ENGINE COOLING. GM: THE SERVICE ENGINE SOON LIGHT IS ON, THERE IS ALSO A MISFIRE OR ENGINE NOISE. THERE ARE MULTIPLE POSSIBLE CAUSES. *RM |
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| PIP-4492P | 2011-03-16. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV). BUICK/CADILLAC/CHEVROLET/GMC/HUMMER/PONTIAC/SAAB: OIL CONSUMPTION AND/OR EXHAUST SMOKE-POSSIBLE PCV BAFFLE OR LIFTER CONCERN. UPON INSPECTION, OBVIOUS OIL WILL BE FOUND IN THE INTAKE MANIFOLD AND/OR PCV VACUUM TUBE. *PE UPDATED 3/21/11. *PE UPDATED 5/9/11. *PE UPDATED 5/25/11. *PE UPDATED 06/16/2011. *KB UPDATED A SECOND TIME ON 06/16/2011. *KB UPDATED 6/27/11. *PE |
| 060139002 | 2007-07-24. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. FRONT BLOWER MOTOR INOPERATIVE OR MAY NOT SHUT OFF IN EXTREMELY LOW AMBIENT TEMPERATURE CONDITIONS. *KB |
| 4231 | 2007-02-22. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SERVICE VME. SUPPLEMENT TO 00-02-35-003L. UPDATE ON NEW I-SHAFT. *KB |
| 050604035 | 2006-05-08. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE; FUEL SYSTEM, GASOLINE. USAGE OF E85 FUELS IN GM VEHICLES. 1997 - 2008 ALL GM CARS AND TRUCKS. 1997 - 2008 ALL SATURN VEHICLES. *TT UPDATED. *KB UPDATED ON 10/22/07. *NJ |
| 000604033 | 2005-12-02. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. I/M READINESS AS PART OF EMISSION INSPECTION AND MAINTENANCE PROGRAM FOR OBD II VEHICLES. *TT |
| 050601014 | 2005-11-07. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. OIL LEAK UNDER EXTREME COLD TEMPERATURES (-34 DEGREES C) (-30 DEGREES F) OR COLDER). *TT |
| 050604022 | 2005-05-14. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. TOP TIER DETERGENT GASOLINE (DEPOSITS, FUEL ECONOMY, NO START, POWER, PERFORMANCE, STALL CONCERNS). 2005 AND PRIOR ALL GENERAL, SAAB AND SATURN CARS AND TRUCKS. *TT |
| 050604021 | 2005-05-14. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. REVISED INSPECTION/MAINTENANCE (I/M) EVAPORATIVE EMISSION (EVAP) SYSTEM SET PROCEDURE. *TT |
| 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 |
| 3045 | 2005-04-20. Service bulletin. ENGINE AND ENGINE COOLING. SHUDDER OR BIND ON TRUNS IN 4 HI. *EH UPDATED 03-01-07. *KB |
| 040849018D | 2005-04-19. Service bulletin. ENGINE AND ENGINE COOLING. CRANKS BUT NO START STALL INACCURATE INCORRECT FUEL GAUGE READING NO FUEL VEHICLE IS OUT OF FUEL AND FUEL GAUGE READS ABOVE EMPTY. THIS INCLUDES 2001 -04 CADILLAC TRUCKS AND 1999-05 CHEVROLET AND GMC TRUCKS. *EH |
| 04-06-01-029 | 2005-03-11. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. UNNECESSARY ENGINE CRANKCASE AND SUBSYSTEMS FLUSHING SERVICES, ADDITIVE RECOMMENDATIONS AND PROPER UTILIZATION OF GM SIMPLIFIED MAINTENANCE SCHEDULE TO ENHANCE CUSTOMER SERVICE EXPERIENCE. 2008 AND PRIOR GM CARS AND TRUCKS. *TT UPDATED 3/31/08. *NJ |
| 000601012 | 2005-03-11. Service bulletin. ENGINE AND ENGINE COOLING. USE OF SURFACE CONDITIONING DISKS. *EH |
| 040603002 | 2005-03-11. Service bulletin. ENGINE AND ENGINE COOLING. DIAGNOSTIC INFORMATION FOR INTERMITTENT VEHICLE NO CRANK DEAD BATTERY. *EH |
| 040603001 | 2005-03-10. Service bulletin. ENGINE AND ENGINE COOLING. INCORRECT AMP CODE GENERATOR. *EH |
| 000602006 | 2005-03-10. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. DEX-COOL ENGINE COOLANT INFORMATION. 2004 AND PRIOR PASSENGER CARS AND TRUCKS. *TT |
| 040601013 | 2005-03-08. Service bulletin. ENGINE AND ENGINE COOLING. INFORMATION ON SERPENTINE BELT WEAR. *EH |
| 0406040445 | 2005-03-07. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. OIL LIFE MONITORING SYSTEM - PCM RESET. 2004 ALL GM PASSENGER CARS AND TRUCKS. *TT |
| 040604043 | 2005-02-16. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. UNABLE TO RESET ENGINE OIL LIFE MONITOR. *TT |
| 040601019 | 2005-02-15. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. GM PERFORMANCE PARTS ENGINE WARRANTY Q & A. 2004 AND PRIOR GM PASSENGER CANS AND TRUCKS. *TT |
| 040604051 | 2004-12-27. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. MAINTENANCE CLEANING OF FUEL INJECTORS. 2005 AND PRIOR ALL GENERAL MOTORS PASSENGER CARS AND TRUCKS INCLUDED. *TT |
| 040604047C | 2004-12-27. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. TOP TIER DETERGENT GASOLINE. 2005 AND PRIOR ALL GENERAL MOTORS PASSENGER CARS AND TRUCKS ALSO INCLUDED. *TT UPDATE. *TT |
| 3087 | 2004-12-17. Service bulletin. ENGINE AND ENGINE COOLING. CRANK NO START, STALL, HARD START, AND NO CRANKING RPM. *EH |
| 3056 | 2004-11-17. 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 |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.