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Service bulletins for the 2003 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.

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

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By component

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Bulletins, newest first
0503080062005-11-04. Service bulletin. SUSPENSION. REVISED STABILIZER SHAFT LINK REPLACEMENT PROCEDURE AND FASTENER TIGHTENING SPECIFICATIONS. 1999 - 2005 CHEVROLET AND GMC FULL SIZE PICKUP AND UTILITY MODELS. *TT
0008460032005-11-03. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). GLOBAL POSITION SENSOR (GPS) PERFORMANCE DEGRADATION. 1996 - 2005 PASSENGER CARS AND TRUCKS. 2002 - 2005 SATURN VEHICLES. *TT
34242005-11-02. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). ELECTRONIC TRANSFER CASE UNABLE TO COMPLETE SHIFT. *TT
34612005-10-29. Service bulletin. SUSPENSION:REAR:SPRINGS:AIR SUSPENSION SYSTEM. REAR AIR SUSPENSION IN-OP DTC C0563. *TT
007732005-10-27. Service bulletin. POWER TRAIN. 4L60E, 4L65E REPLACEMENT VALVE BODY GASKETS DOES NOT SEEM TO FIT. *TT
33242005-10-27. Service bulletin. SUSPENSION. SERVICE AIR SUSPENSION MESSAGE AFTER REPLACING THE AIR SUSPENSION COMPRESSOR ASSEMBLY FROM A SINGLE STAGE COMPRESSOR TO A DUAL STAGE COMPRESSOR. MAY ALSO HAVE A CURRENT OR HISTORY CODE C0660 AND/OR C0712. *TT
33102005-10-26. Service bulletin. STEERING:HYDRAULIC POWER ASSIST SYSTEM. LACK OF STEERING ASSIST WHEN STOPPED OR DURING PARKING LOT TYPE MANEUVERS. 99 - 05 CHEVROLET/GMC/CADILLAC/HUMMER H2 ALL FULL SIZE TRUCKS UTILITIES AND VANS. *TT
36002005-10-24. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY. SERVICE VME - SUNROOF MOTOR REPLACEMENT INFORMATION. *TT
35212005-09-28. Service bulletin. SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:ABS WARNING LIGHT; SERVICE BRAKES, AIR:ANTILOCK:ABS WARNING LIGHT. ANTI-LOCK BRAKING SYSTEM (ABS) LIGHT ON SPEEDOMETER MAY BE ERRATIC. DIAGNOSTIC TROUBLE CODE (DTC) C0055 C0235 C0236 OR C0237 STORED IN THE EBCM. *TT 1998-2008 ALL CHEVROLET, GMC, BUICK, AND OLDSMOBILE MID-SIZED TRUCKS AND UTILITIES. 1998-2008 ALL CHEVROLET, GMC, AND CADILLAC FULL SIZED TRUCKS AND UTILITIES. *KB UPDATED ON 09/20/07. *NJ
572005-09-13. Service bulletin. ELECTRICAL SYSTEM. REPROGRAMMING PASSENGER DOOR MODULE. THE RKE KEY FOB DOES NOT FUNCTION, THE FRONT PASSENGER DOOR POWER WINDOW, LOCK, MIRROR AND HEATED SEAT ARE INOPERATIVE. GM TECH LINK. 2003 CHEVROLET AND GMC FULL-SIZE PICKUPS AND UTILITIES INCLUDED. *TT
7022005-09-10. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. NAVIGATION RADIO HUM. THIS APPLIES TO 2003-05 CHEVROLET/GMC/CADILLAC/HUMMER H2 FULL SIZE UTILITIES. GM TECH LINKS. *TT
6092005-09-02. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. A/C LOW PRESSURE SWITCH DIAGNOSIS. *SC
6102005-08-11. Service bulletin. VISIBILITY:WINDSHIELD. WINDSHIELD UPPER REVEAL MOLDING WHICH MAY CONTRIBUTE TO WIND NOISE IN THE WINDSHIELD AREA. GM TECH LINK. *TT
050846006A2005-05-14. Service bulletin. EQUIPMENT. INFORMATION ON UPGRADING CERTAIN ONSTAR GENERATION 5 ANALOG/DIGITAL-READY SYSTEMS TO ONSTAR GENERATION 6 DUAL-MODE (ANALOG/DIGITAL). *TT
0508460052005-05-14. Service bulletin. EQUIPMENT. ONSTAR LABOR OPERATION CODES. 1996-2005 GM PASSENGER CARS AND TRUCKS AND SATURN VEHICLES. *TT
0508460042005-05-14. Service bulletin. EQUIPMENT. ONSTAR PHONE NUMBER CONCERNS (PHONE NUMBER INCORRECT/ASSIGNED TO ANOTHER VEHICLE/PHONE) THAT OCCUR DURING DIAGNOSIS OF ONSTAR SYSTEM. 2000-2005 GM PASSENGER CARS AND TRUCKS AND 2003-2005 SATURN VEHICLES WITH ONSTAR. *TT
0506040222005-05-14. 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
0506040212005-05-14. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. REVISED INSPECTION/MAINTENANCE (I/M) EVAPORATIVE EMISSION (EVAP) SYSTEM SET PROCEDURE. *TT
0500890182005-05-13. Service bulletin. UNKNOWN OR OTHER. GM PARTS ORDERING SYSTEM. ALL 2005 AND PRIOR GM AND TRUCKS. *TT
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

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