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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
990420002B2003-12-05. Service bulletin. POWER TRAIN. DRIVELINE CLUNK. VARIOUS MODELS INCLUDING 2004 AND PRIOR LIGHT DUTY TRUCK MODELS. *TT
0306010232003-12-04. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. HIGHER THAN EXPECTED OIL CONSUMPTION <8500 GVW. VARIOUS MODELS INCLUDING 2003-2004 CHEVROLET KODIAK (C4500-C5500 SERIES MODELS)AND GMC TOPKICK (C4500-C5500 SERIES MODELS). *TT
0300890242003-12-04. Service bulletin. UNKNOWN OR OTHER. FIELD PRODUCT REMINDER - CAR AND TRUCK FIX IT RIGHT THE FIRST TIME ISSUES AND BULLETINS RELEASED WEEKS OF AUGUST 4, 2003, AUGUST 11, 2003 AND AUGUST 18, 2003. VARIOUS MODELS INCLUDING 2004 AND PRIOR PASSENGER CARS AND TRUCKS. *TT
0300890222003-12-04. Service bulletin. UNKNOWN OR OTHER. CAR AND TRUCK FIX IT RIGHT THE FIRST TIME ISSUES AND BULLETINS RELEASED WEEKS OF JULY 21, 2003 AND JULY 28, 2003. VARIOUS MODELS INCLUDING 2004 AND PRIOR PASSENGER CARS AND TRUCKS. *TT
0308520052003-12-03. Service bulletin. EQUIPMENT. DIAGNOSTIC INFORMATION FOR REPLACEMENT REMOTE KEYLESS ENTRY (RKE) TRANSMITTER INOPERATIVE - UNABLE TO SYNCHRONIZE. *TT
0308480062003-12-03. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:REAR WINDOW. REPAIR INFORMATION FOR RECONNECTION OF REAR WINDOW DEFROSTER CONTACT OR TAB. 2000-2004 LIGHT AND MEDIUM DUTY TRUCKS AND 2003-2004 HUMMER H2 WITH ELECTRIC REAR WINDOW DEFROSTER. *TT
0308460042003-12-03. Service bulletin. EQUIPMENT. PROPER DIAGNOSIS OF ONSTAR SYSTEM AND INFORMATION NECESSARY WHEN CONTACTING GM TECHNICAL ASSISTANCE CENTER (TAC) REGARDING ONSTAR PARTS RESTRICTION PROGRAM CONCERNS ON VARIOUS MODELS INCLUDING 1996-2004 PASSENGER CARS AND TRUCKS. *TT
030844018A2003-12-02. Service bulletin. EQUIPMENT. REAR SEAT AUDIO (RSA) AND/OR REAR HVAC INOPERATIVE. *TT UPDATE. *TT
0307300432003-12-02. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. INFORMATION REGARDING AUTOMATIC TRANSMISSION SHIFT LOCK CONTROL FUNCTION. VARIOUS MODELS INCLUDING 2004 AND PRIOR PASSENGER CARS AND TRUCKS. *TT UPDATING TO 2007 AND PRIOR PASSENGER CARS AND TRUCKS. *KB
0305250072003-12-02. Service bulletin. SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP. ANTILOCK BRAKE (ABS) ACTIVATION AT LOW SPEEDS (CLEAN WHEEL SPEED SENSOR MOUNTING SURFACE). *TT UPDATED 10/23/09. *PE
030091001A2003-12-01. Service bulletin. UNKNOWN OR OTHER. VIBRATION ANALYSIS WORKSHEET. VARIOUS MODELS INCLUDING 2004 AND PRIOR PASSENGER CARS AND TRUCKS. *TT *AR
0300890302003-12-01. Service bulletin. UNKNOWN OR OTHER. FIELD PRODUCT REMINDER - CAR AND TRUCK FIX IT RIGHT THE FIRST TIME ISSUES AND BULLETINS RELEASED WEEKS OF SEPTEMBER 8, 2003 AND SEPTEMBER 15, 2003. 2004 AND PRIOR PASSENGER CARS, TRUCKS AND 2004 AND PRIOR HUMMER H2. *TT
0300890292003-12-01. Service bulletin. UNKNOWN OR OTHER. OPTIMIZING CUSTOMER SATISFACTION WITH DEALER INSTALLED OPTIONS AND ACCESSORIES. *TT
0300890282003-12-01. Service bulletin. UNKNOWN OR OTHER. FIELD PRODUCT REMINDER - CAR AND TRUCK FIX IT RIGHT THE FIRST TIME ISSUES AND BULLETINS RELEASED WEEKS OF AUGUST 25, 2003 AND SEPTEMBER 1, 2003. 2004 AND PRIOR PASSENGER CARS, TRUCKS AND 2004 AND PRIOR HUMMER H2. *TT
0300890272003-12-01. Service bulletin. UNKNOWN OR OTHER. SUBLET ADMINISTRATIVE ALLOWANCE (COVERAGE S) LABOR OPERATIONS. VARIOUS MODELS INCLUDING 2004 AND PRIOR GM PASSENGER CARS AND TRUCKS. *TT
020730029D2003-12-01. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. PRODUCT QUALITY CENTER FOR ENGINE AND TRANSMISSION ASSEMBLY AND TRANSFER CASE REPLACEMENT. VARIOUS MODELS INCLUDING 2004 AND PRIOR PASSENGER VEHICLES AND LIGHT DUTY TRUCKS. *TT 2005 AND PRIOR PASSENGER VEHICLES AND LIGHT DUTY TRUCKS. *TT
020604057C2003-12-01. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. LABOR OPERATION ASSIGNMENTS FOR CONTROL MODULE PROGRAMMING. VARIOUS MODELS INCLUDING 2004 AND PRIOR PASSENGER CARS AND TRUCKS, 2003-2004 KODIAK C4500-C8500 AND TOPKICK C4500-C8500 SERIES MODELS. *TT
020089002B2003-12-01. Service bulletin. UNKNOWN OR OTHER. INFORMATION FOR DEALERS ON HOW TO SUBMIT A FIELD PRODUCT REPORT. 2004 AND PRIOR PASSENGER CARS AND TRUCKS. *TT *AR
010418001C2003-12-01. Service bulletin. POWER TRAIN. DRIVELINE CHARACTERISTICS FOR ALL-WHEEL DRIVE (AWD) AND FOUR-WHEEL DRIVE (4WD) SYSTEMS. *TT UPDATED *EH
000089008B2003-12-01. Service bulletin. UNKNOWN OR OTHER. SOME CUSTOMERS MAY WANT TO TOW THEIR VEHICLE BEHIND ANOTHER VEHICLE WITH ALL FOUR TIRES ONT HE GROUND. THIS BULLETIN PROVIDES INFORMATION REGARDING RECREATIONAL (DINGHY) TOWING FOR CERTAIN VEHICLES INCLUDING 1988-2004 CHEVROLET AND GMC LIGHT DUTY TRUCKS. *TT
014562003-11-24. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. THE NAV RADIO SYSTEM NOT AVAILABLE WITH CD CHANGER INFORMATION. SERVICE VME. *TT
00843C2003-11-20. Service bulletin. EQUIPMENT. REPLACEMENT (RKE) TRANSMITTER IS INOPERATIVE - SERVICE VME. *TT
013392003-11-19. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN. HVAC BLOWER MOTOR FAN STAYS ON IN THE HIGH BLOWER POSITION. SERVICE VME. *TT
0829032003-11-06. Service bulletin. EQUIPMENT. INSTALLATION OF TAIL LAMP BRUSH GUARDS. VME MESSAGE. *TT
0623032003-10-29. Service bulletin. EQUIPMENT:ELECTRICAL. OFF ROAD STOP LAMP PACKAGE - A REVISED HARNESS TO BE SHIPPED. *TT

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