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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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By component

By trouble code

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Bulletins, newest first
020802004-07-10. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. REPEAT HVAC ACTUATOR REPLACEMENT. *TT
020782004-07-10. Service bulletin. STEERING:HYDRAULIC POWER ASSIST:PUMP. POWER STEERING PUMPS - NOT PAINTED. SERVICE VME. *TT
020682004-07-10. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. NO START WITH DIAGNOSTIC TROUBLE CODE (DTC) P1626 OR P1631. ALSO INCLUDES 1998-2004 CHEVROLET, GMC FULL SIZE TRUCKS/ UTILITIES/ VANS. *TT
020602004-07-09. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. NO AUDIO AND RADIO DISPLAY INOPERATIVE OR CLOCK RESETS. *TT
020452004-07-09. Service bulletin. EQUIPMENT. INFORMATION ON OPTION B2E VICTORY RED BICYCLE. SERVICE VME. *TT
020542004-07-09. Service bulletin. ENGINE AND ENGINE COOLING. ELIMINATION OF LOW COOLANT MESSAGE FROM DIC. SERVICE VME. *TT
020462004-07-09. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). NAVIGATION SCREEN LOCKS UP. *TT
01004A2004-06-30. Service bulletin. ELECTRICAL SYSTEM. DIAGNOSTIC TROUBLE CODE (DTC) C0660 STORED IN VEHICLE HISTORY. SERVICE VME. *TT 2005 HUMMER H2 ADDED. *TT
020412004-06-09. Service bulletin. AIR BAGS. PASSENGER SIDE AIR BAG DISCOLORATION - SIR ON 2004 CHEVROLET, GMC AND CADILLAC ALL FULL SIZE TRUCKS AND UTILITIES AS WELL. *TT
00372D2004-06-09. Service bulletin. EQUIPMENT:ELECTRICAL. ONSTAR SYSTEM IS ATTEMPTING AND/OR COMPLETING PHONE CALLS WHICH THE OPERATOR OF THE VEHICLE DID NOT INITIATE. *TT
01634A2004-06-09. Service bulletin. STEERING. SUPPLEMENT TO 00-02-35-003D - CLUNKING NOISE UNDER HOOD AND CAN BE FELT IN THE STEERING WHEEL. *TT
01919A2004-06-09. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. REPLACEMENT RADIO READS CAL ERROR, HAS NO AUDIO OR WILL NOT PROGRAM. *TT
010120042004-06-07. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. GENERAL INFORMATION ON RESETTING THE GM OIL LIFE SYSTEM. 03-05 CHEVROLET ALL FULL SIZE TRUCKS AND UTILITIES AND 03-05 GMC ALL FULL SIZE TRUCKS AND UTILITIES AND 03-05 CADILLAC FULL SIZE UTILITIES AND 2005 HUMMER H2. *TT
015992004-06-04. Service bulletin. POWER TRAIN. 4L60E, 4L65E FORWARD AND LOW REVERSE WAVED STEEL CLUTCH PLATE APPEARANCE CHANGE. *TT
016542004-06-04. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. SQUAWK OR GRUNT NOISE THAT OCCURS ON THE 2-3 UPSHIFT ON VEHICLES WITH 4L60E - M30, 4L60E M32 TRANSMISSION. *TT
016342004-06-04. Service bulletin. STEERING. INTERMEDIATE STEERING SHAFT SERVICE KIT. SERVICE VME. *TT
01997B2004-06-04. Service bulletin. FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP. ONE OR SEVERAL OF THE FASTENING NUTS ON THE BACKSIDE OF THE FUEL FILLER DOOR ASSEMBLY WERE NOT ORIENTED PROPERLY CAUSING AN INTERFERENCE WITH THE VEHICLE'S FUEL FILLER DOOR OPENING WHEN ATTEMPTING TO INSTALL THIS ACCESSORY ONTO THE VEHICLE. SERVICE VMW CONCERNING CHROME FUEL FILLER DOOR ASSEMBLY INSTALLATION. *NM
016692004-06-03. Service bulletin. SUSPENSION:REAR. SQUEAK AT REAR OF VEHICLE.*MR
020032004-05-25. Service bulletin. SUSPENSION. MISSING ALIGNMENT DOWEL PIN. ALL 1999-2004 CHEVROLET FULL SIZE TRUCKS AND UTILITIES, 1999-2004 GMC FULL SIZE TRUCKS AND UTILITIES, 2002-2004 CADILLAC FULL SIZE TRUCKS AND UTILITIES. *MR
019552004-05-25. Service bulletin. LATCHES/LOCKS/LINKAGES. PASSENGER DOOR MODULE LOCK UP.*MR
020072004-05-25. Service bulletin. VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR. POWER FOLDING MIRRORS WILL NOT FOLD INWARD.*MR
019582004-05-20. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. PRODUCT INFORMATION REGARDING RADIO PERSONALIZATION. *MR
019192004-05-14. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. REPLACEMENT RADIO READS CAL ERROR, HAS NO AUDIO OR WILL NOT PROGRAM. *TT
018902004-05-14. Service bulletin. EQUIPMENT:MECHANICAL:CARRIER/RACK. ROOF RACK CROSS BAR RATTLE. *TT
018642004-05-07. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. RADIO CD SKIPS/EJECTS OR CLOCK RESETS TO 12:00. *MR *TT

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