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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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Bulletins, newest first
0203070022005-05-12. Service bulletin. SUSPENSION. REVISED FRONT CASTER AND CAMBER ADJUSTMENT PROCEDURE. ORIGINAL NOT YET RECEIVED. *TT
35092005-05-11. Service bulletin. SUSPENSION:REAR. VEHICLE SITS LOW OR THE SUSPENSION SAGS OVERNIGHT. *TT
35032005-05-11. Service bulletin. SUSPENSION:REAR. REAR AIR SUSPENSION LEAK-DOWN. *TT
34992005-05-11. Service bulletin. STEERING:LINKAGES:ARM:IDLER AND ATTACHMENT. STEERING IDLER ARM INSPECTION PROCEDURE. *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
34722005-05-11. Service bulletin. SUSPENSION:REAR. REAR END OF THE VEHICLE APPEARS TO SAG AFTER THE VEHICLE SITS OVERNIGHT OR LONGER. *TT
031020052005-05-10. Service bulletin. STRUCTURE:BODY. THE A PILLAR SUNROOF DRAIN HOSE MAY BE MISROUTED AND WATER MAY BE ENTERING THE AIR INLET OF THE HVAC CASE. *EH
031020052005-05-10. Service bulletin. STEERING. STEERING GEAR WHISTLE NOISE ON TURNS. *EH
0108420012005-05-04. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. HEADLAMPS CONDENSATION AND REPLACEMENT GUIDELINES. KAPERII. *TT 1993-2008 GM PASSENGER CARS AND TRUCKS INCLUDING SATURN. *KB UPDATED 2/26/08. *NJ
070120042005-04-29. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. OIL LIFE SYSTEM RESET PROCEDURES-TRUCKS. BUICK TERAZZA 2005, GMC SIERRA DENALI 2002-2003, GMC B7 CHASSIS MEDIUM DUTY 2003-2005 AND GMC 560 C-SERIES 2003-2005 *SC
012020052005-04-22. Service bulletin. VISIBILITY:WINDSHIELD WIPER/WASHER. WINDSHIELD WIPER PULSE FUNCTION. *TT
34052005-04-21. Service bulletin. VISIBILITY:WINDSHIELD WIPER/WASHER. WINDSHIELD WIPER PULSE FUNCTION. *TT
33862005-04-21. Service bulletin. STEERING:HYDRAULIC POWER ASSIST SYSTEM. LACK OF STEERING ASSIST OR SHUDDER DURING PARKING LOT TYPE MANEUVERS. *TT
30452005-04-20. Service bulletin. ENGINE AND ENGINE COOLING. SHUDDER OR BIND ON TRUNS IN 4 HI. *EH UPDATED 03-01-07. *KB
33822005-04-20. Service bulletin. ELECTRICAL SYSTEM:IGNITION:SWITCH. IGNITION KEY CAN NOT BE ROTATED IN STEERING COLUM LOCK CYLINDER. THIS INCLUDES 1999-05 CHEVROLET AND GMC FULL SIZE TRUCKS AND UTILITY. *EH
32802005-04-20. Service bulletin. FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:INJECTORS. RUST FOUND IN THE INJECTOR INLET FILTER DURING INJECTOR REPAIRS. *TT
0508440012005-04-20. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. COMPACT DISC OR DVD PLAYER SKIPPING INOPERATIVE SLUGGISH AND OR LONG SEARCH TIMES. THIS INCLUDES 2005 AND PRIOR GM PASSENGER CARS TRUCKS AND SATURN MODELS.*EH
0503080022005-04-19. Service bulletin. SUSPENSION. REPLACEMENT OF SHOCK ABSORBERS AND STRUTS AND USE OF LABOR OPERATION. THIS ALSO INCLUDES 2005 AND PRIOR PASSENGERS CARS AND TRUCKS ALSO INCLUDE SATURN VEHICLES. *EH
040849018D2005-04-19. 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
0406010342005-04-19. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. INSTRUCTIONS TO BE FOLLOWED TO AID IN OBTAINING ROOT CAUSE ANALYSIS ON BOTH OEM AND GOODWRENCH ENGINES TRANSMISSIONS AND TRANSFER CASES. THIS INCLUDES 2005 AND PRIOR GM PASSENGER CARS AND TRUCKS. *EH
000310003G2005-04-19. Service bulletin. SUSPENSION. GM NEW VEHICLE TIRE WARRANTY PROGRAM. *TT 1996-2005 PASSENGER CARS AND LIGHT DUTY TRUCKS. *TT
050220042005-04-12. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. OPTION B2E VICTORY RED PACKAGE. *EH
070820042005-04-12. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. GM SERVICE TECHNICAL COLLEGE. *EH
070120042005-04-11. Service bulletin. UNKNOWN OR OTHER. PROPANE TYPE ODOR IN THE VEHICLE. *TT
081820042005-04-07. Service bulletin. SUSPENSION:FRONT:SPRINGS:AIR SUSPENSION SYSTEM. SINGLE REAR AIR SUSPENSION COMPRESSOR DISCONTINUED AND IS REPLACED WITH THE DUAL AIR COMPRESSOR USED ON THE 2005 MODEL. *TT

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