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Service bulletins for the 2005 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.

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

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Bulletins, newest first
0406040512004-12-27. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. MAINTENANCE CLEANING OF FUEL INJECTORS. 2005 AND PRIOR ALL GENERAL MOTORS PASSENGER CARS AND TRUCKS INCLUDED. *TT
040604047C2004-12-27. 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
30872004-12-17. Service bulletin. ENGINE AND ENGINE COOLING. CRANK NO START, STALL, HARD START, AND NO CRANKING RPM. *EH
31892004-12-15. Service bulletin. LATCHES/LOCKS/LINKAGES:DOORS:LATCH; LATCHES/LOCKS/LINKAGES. UNABLE TO DISABLE AUTO DOOR LOCKS. THIS INCLUDES 05 CHEVROLET GMC CADILLAC FULL SIZE TRUCKS AND UTILITIES. *EH ALSO INCLUDES AVALANCE, SILVERADO SUBURBAN TAHOE; GMC SIERRA, YUKON, DENALI, YUKON XL, DENALI XL. UPDATED 8/26/08. *PE UPDATED 5/9/11. *PE
32152004-12-15. Service bulletin. ELECTRICAL SYSTEM. INSTRUMENT PANEL CLUSTER GUAGES FLOAT UP AFTER IGNITION KEY TURNED OFF. VARIOUS MODELS INCLUDING 99-05 CHEVROLET, GMC AND CADILLAC FULL SIZE UTILITIES. *TT
31702004-12-02. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. HARSH 1-2 SHIFT. *EH
31892004-12-01. Service bulletin. LATCHES/LOCKS/LINKAGES. DOORS WILL NOT LOCK MANUALLY. VARIOUS MODELS INCLUDING 2005 CHEVROLET, GMC AND CADILLAC ALL FULL SIZE UTILITIES. *EH
010138006C2004-11-22. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. CONTAMINATED R-134A AIR CONDITIONING SYSTEMS -AIR CONDITIONING SYSTEM FLUSHING PROCEDURES AND UNIVERSAL IN-LINE AIR CONDITIONING FILTER INSTALLATION. 1993 - 2005 PASSENGER VEHICLES AND LIGHT DUTY TRUCKS. *TT
0008480052004-11-22. Service bulletin. VISIBILITY. DISTORTION IN OUTER SURFACE OF VEHICLE GLASS. 2005 AND PRIOR PASSENGER VEHICLES AND TRUCKS. *TT
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
31792004-11-08. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. AUTOMATIC DUAL ZONE HVAC BATTERY DRAW SUPPLEMENT TO 02-01-39-007A. *TT
31802004-11-08. Service bulletin. STRUCTURE. LIFTGATE ROOF MOLDING RETAINERS LOOSE OR MISSING. *TT
31212004-11-08. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. EXHAUST VIBRATION RESONANCE OR MOAN IN VEHICLES WITH GEN III V8 ENGINES. *TC
30912004-11-05. Service bulletin. UNKNOWN OR OTHER. LABOR TIME FOR INSTALLATION OF LOCKING TONNEAU COVER RPA EN4. *SC
31072004-11-05. Service bulletin. ENGINE AND ENGINE COOLING. P0420 AND P0430 DTSC IN THE DETROIT, MICHIGAN AREA WITH GEN III V-8 ENGINES. *SC
3045A2004-11-05. Service bulletin. POWER TRAIN. 4485 4484 SHUDDER OR BIND ON TURNS IN 4 HI. *SC
31062004-11-04. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. XM RADIO WAS WORKING PRIOR TO JULY 26, 2004 AND IT IS INOPERATIVE NOW. *JB
31202004-11-04. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). ONSTAR CENTER UNABLE TO PERFORM REMOTE DIAGNOSTIC. (2004-2005 CHEVROLET YUKON, 2005 CHEVROLET TRAILBLAZER, 2002, 2003, 2005 BUICK RAINIER, 2005 CHEVROLET EXPRESS VAN, AND 2005 CADILLAC SEVILLE) *SC
31192004-11-04. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. ENGINEERING INVESTIGATION - CATALYTIC CONVERTER REPLACEMENT. *SC
31632004-11-04. Service bulletin. EQUIPMENT. CHANGES WITH DRIVER PERSONALIZATION. 2005 CHEVROLET/GMC/CADILLACALL FULL SIZE TRUCKS AND UTILITIES. *TC
31362004-11-04. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. THE 4L60E/4L65E AUTOMATIC TRANSMISSION SLIP CONDITION IN 2ND, 3RD, OR 4TH GEAR. ALSO TO INCLUDE THE PONTIAC GTO 2005. *TC
31612004-11-04. Service bulletin. SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES. EXCESSIVE BRAKE OR SPONGY BRAKE PEDAL. 03-05 CHEVROLET FULL SIZE TRUCKS AND UTILITIES. 03-05 GMC FULL SIZE TRUCKS AND UTILITIES. 03-05 CADILLAC/HUMMER H2 ALL FULL SIZE TRUCKS AND UTILITIES. *TC
31212004-11-04. Service bulletin. ENGINE AND ENGINE COOLING. EXHAUST VIBRATION RESONANCE OR MOAN. (2004-2005 GMC DENALI) *SC
31232004-11-04. Service bulletin. UNKNOWN OR OTHER. PARTS USAGE FOR BULLETIN 04-01-39-009. (CHEVROLET SSR 2005, CHEVROLET TRAILBLAZER 2005, CHEVROLET SUBURBAN, BUICK RAINIER 2003-2005) *SC
31112004-11-03. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). NAVIGATION SYSTEM COVERAGE OF CANADA. (2004-2005 CHEVROLET TRAILBLAZER, 2004-2005 GMC ENVOY, 2004-2005 BUICK RAINIER/RENDEZVOUS, 2004-2005 CADILLAC ESCALADE, 2005 CHEVROLET AVALANCHE/SUBURBAN/TAHOE, 2004-2005 GMC DENALI, 2005 GMC YUKON, AND 2005 HUMMER H2) *SC

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