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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.

By type

By component

By trouble code

By topic

Bulletins, newest first
30872004-10-04. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. CRANK NO START WITH NO CRANKING RPM SPARK OR INJECTOR PULSE. *TT
30862004-10-04. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. WHISTLE NOISE FROM THE THROTTLE BODY AREA ON LIGHT THROTTLE ACCELERATION ON VEHICLES WITH GEN III ENGINES AND ELECTRONIC THROTTLE. *TT
102320022004-10-02. Service bulletin. VISIBILITY:POWER WINDOW DEVICES AND CONTROLS. CREAK TYPE NOISE COMING FROM THE DOOR WHEN THE WINDOW IS BEING MOVED IN THE UPWARD POSITION AT ABOUT 3/4 OF THE WAY TO THE TOP POSITION. *TT
102320022004-10-02. Service bulletin. STRUCTURE:BODY:ROOF AND PILLARS. THIS INVOLVES SUNROOF EQUIPPED TRUCKS WHERE CUSTOMERS HAVE REPORTED WATER LEAKS FROM THE LEFT FRONT OF THE ROOF AND HEADLINER AREA. *TT
101720022004-10-01. Service bulletin. VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR. POWER FOLDING OUTSIDE MORRIRS MAY NOT SET IN THE FULL LOCKED POSITION OR DETENT DUE TO MOVEMENT DURING TRANSPORT. *TT
101420022004-10-01. Service bulletin. SUSPENSION. WHEEL ALIGNMENT REQUIREMENTS FOR FULL-SIZE PICK-UPS AND UTILITIES, 1999 THROUGH 2003, G-VANS, 1996 THROUGH 2002, AND THE GMT 610. *TT
101420022004-10-01. Service bulletin. VISIBILITY:REARVIEW MIRRORS/DEVICES. EXTERIOR MIRROR CURB VIEW ASSIST PROGRAMMING FUNCTIONS AND FEATURES. *TT
090520022004-09-30. Service bulletin. STEERING:LINKAGES:ARM:IDLER AND ATTACHMENT. FINDING THE IDLER ARM FITTING. *TT
090520022004-09-30. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. RADIO DOES NOT PRODUCE AN AUDIO SIGNAL UPON STARTUP OR LOSES IT AT TIMES, REPLACE THE BOSE AMPLIFIER. *TT
090320022004-09-30. Service bulletin. PARKING BRAKE:CONVENTIONAL:MECHANICAL:LINKAGE AND CABLE. FOR DRIVELINE CLUNK UPON ACCELERATING IN A FORWARD DIRECTION AFTER BACKING UP AND IT IS NOT DRIVELINE LASH RELATED, REPLACE THE PARK BRAKE CABLES. *TT
090320022004-09-30. Service bulletin. INTERIOR LIGHTING. SHOULD A CUSTOMER INDICATE THAT A ROOF MARKER LAMP HAS BECOME LOOSE OR DISLODGED, REPLACE THE LAMP ASSEMBLY. *TT
091120022004-09-30. Service bulletin. SEATS. ALL FUNCTIONS OF THE DRIVER AND PASSENGER MEMORY SEAT, INCLUDING MOVEMENT, MEMORY RECALL AND HEAT SEAT OPERATION, IS INOPERATIVE. 2003 GMC AND CHEVROLET PICK-UP AND UTILITIES. *TT
3046A2004-09-27. Service bulletin. FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM. FUEL GAUGE FLUCTUATION IN PARK OR NEUTRAL. *TT
30422004-09-27. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SERVICE ENGINE SOON LIGHT AND / OR REDUCED ENGINE POWER MODE DUE TO DIAGNOSTIC TROUBLE CODES P0120, P0220, P1516 AND/OR P1518. THIS CONDITION IS NORMALLY VERY INTERMITTENT. *TT
30602004-09-27. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. THE ENGINE DOES NOT STALL WHEN PERFORMING A P1870 DIAGNOSTIC TEST WITH THE TECH 2 SCAN TOOL OR WHEN COMMANDING THE TORQUE CONVERTER CLUTCH ENABLE SOLENOID ON APPLICATIONS THAT DO NOT HAVE THE P1870 DIAGNOSTIC TEST LISTED. 4L60E OR 4L65E TRANSMISSIONS. *TT
042020042004-09-17. Service bulletin. VISIBILITY:WINDSHIELD WIPER/WASHER. WHEN SWITCHING THE WINDSHIELD WIPER SPEED FROM LOW TO INTERMITTENT, THE SPEED REMAINS IN THE LOW. GM VOICEMAIL EXPRESS. *TT
022020042004-09-10. Service bulletin. PARKING BRAKE:CONVENTIONAL:MECHANICAL:LINKAGE AND CABLE. PARK BRAKE CABLE UNDERBODY SQUEAK THAT MAY SOUND LIKE IT IS IN THE FRONT OF THE VEHICLE. GM VOICEMAIL EXPRESS. *TT
012320042004-09-10. Service bulletin. STRUCTURE:BODY. RATTLE IN THE REAR STOWAGE COMPARTMENT OF THE VEHICLE. GM VOICEMAIL EXPRESS. *TT
3000A2004-08-25. Service bulletin. SUSPENSION:REAR. REAR AXLE LOCKING DIFFERENTIAL CHATTER SHUDDER NOISE ON TURNS. *MJ
30002004-08-25. Service bulletin. STRUCTURE:BODY:DOOR. SERVICE VME - 03 - 04 FULL SIZE TRUCK, UTILITIES AND HUMMER H2 PASSENGER DOOR MODULE INOPERATIVE. *MJ
30182004-08-23. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE CYLINDER HEAD CUP PLUG COOLANT LEAK. *MJ
30242004-08-23. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. 4.8 5.3 6.0 GEN 111 ENGINE COATED PISTON INFORMATION. *MJ
30152004-08-23. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. 6.0L LQ4 VIN U ENGINE RESTRICTION. *TT
30322004-08-23. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SERVICE ENGINE SOON (SES) LIGHT ON WITH P0446 DUE TO DUST IN THE EVAP VENT VALVE ON VEHICLES THAT ARE OPERATED IN DUSTY ENVIRONMENTS, SUCH AS FARMING OR OFF-ROAD APPLICATIONS. *TT
0408500072004-08-17. Service bulletin. SEATS:FRONT ASSEMBLY:SEAT HEATER/COOLER. SERVICE INFORMATION FOR FRONT HEATED SEAT INOPERATIVE/COLD. *MJ

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