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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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Bulletins, newest first
8396052005-03-12. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. RADIO TELEPHONE/MOBILE RADIO (TRANSCEIVER) INSTALLATION AND TROUBLESHOOTING GUIDELINES. 1990-2005 PASSENGER CARS AND TRUCKS. ORIGINAL NOT YET RECEIVED. *TT
0401380152005-03-12. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. DIAGNOSTIC INFORMATION FOR MOAN GROAN OR BOOM NOISE AT IDLE VIBRATION IN STEERING WHEEL OR FELT THROUGH FLOOR WHEN AC COMPRESSOR ENGAGES DO NOT REPLACE AC COMPRESSOR. *EH
0401380142005-03-12. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. HIGH PITCHED TONE HEARD INSIDE VEHICLE WHEN AC COMPRESSOR IS ENGAGED. *EH
0401380132005-03-12. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. HVAC NOT COLD ENOUGH A/C COMPRESSOR DOES NOT ENGAGE . *EH
04-06-01-0292005-03-11. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. UNNECESSARY ENGINE CRANKCASE AND SUBSYSTEMS FLUSHING SERVICES, ADDITIVE RECOMMENDATIONS AND PROPER UTILIZATION OF GM SIMPLIFIED MAINTENANCE SCHEDULE TO ENHANCE CUSTOMER SERVICE EXPERIENCE. 2008 AND PRIOR GM CARS AND TRUCKS. *TT UPDATED 3/31/08. *NJ
0006010122005-03-11. Service bulletin. ENGINE AND ENGINE COOLING. USE OF SURFACE CONDITIONING DISKS. *EH
0406030022005-03-11. Service bulletin. ENGINE AND ENGINE COOLING. DIAGNOSTIC INFORMATION FOR INTERMITTENT VEHICLE NO CRANK DEAD BATTERY. *EH
0408500032005-03-10. Service bulletin. SEAT BELTS. ENABLING MEMORY SEAT FEATURE VIA DIC IF FEATURE APPEARS INOPERATIVE. *EH
0408420032005-03-10. Service bulletin. STRUCTURE:BODY. TRAILER BRAKES APPLIED WHEN GM ACCESSORY ROOF MOUNTED OFF ROAD SPOT LAMPS ARE ON. *EH
0407300062005-03-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. 4L65 4L60E 4L60 AND 2004R AUTOMATIC TRANSMISSION OIL PUMP SPRING FIRST AND SECOND DESIGN IDENTIFICATION. *EH
0406030012005-03-10. Service bulletin. ENGINE AND ENGINE COOLING. INCORRECT AMP CODE GENERATOR. *EH
0107300312005-03-10. Service bulletin. POWER TRAIN. 1-2, 2-3, 3-4, 4-5 SHIFT AND TORQUE CONVERTER CLUTCH (TCC) CHARACTERISTICS DURING COLD WEATHER OPERATION ON 4L60-E, 4L80-E OR ALLISON TRANSMISSIONS. TO INCLUDE 2001-2004 CHEVROLET AND GMC LIGHT DUTY FULL-SIZE PICKUP AND UTILITY MODELS. *TT
620504A2005-03-09. Service bulletin. UNKNOWN OR OTHER. OPERATING PROCEDURES - 18 POINTS. BULLETIN 62-05-04A NOT YET RECEIVED. 2005 AND PRIOR PASSENGER CARS AND TRUCKS INCLUDED. *TT
0408430032005-03-08. Service bulletin. STRUCTURE:BODY. REPLACEMENT OF WINDSHIELD WIPER INSERTS. THIS INCLUDES 2002-04 GM PASSENGER CARS AND LIGHT DUTY TRUCKS. *EH
0406010132005-03-08. Service bulletin. ENGINE AND ENGINE COOLING. INFORMATION ON SERPENTINE BELT WEAR. *EH
010310012A2005-03-08. Service bulletin. SUSPENSION. GUIDELINES FOR USING E2020-WHEEL ALIGNMENTS, E2000-TOE ADJUST AND E0200, E0201, E0203, E0204-WHEEL BALANCE. 1989-2005 PASSENGER CARS AND LIGHT DUTY TRUCKS. BULLETIN 01-03-10-012A NOT YET RECEIVED. *TT
010310003A2005-03-08. Service bulletin. SUSPENSION. GM OF CANADA NEW VEHICLE LIMITED WARRANTY TIRE PROGRAM. 1996-2005 ALL PASSENGER CARS AND LIGHT DUTY TRUCKS. ORIGINAL WAS NOT RECEIVED. *TT
0304190032005-03-07. Service bulletin. POWER TRAIN:DRIVELINE. FLUID LEAK FROM FRONT OF VEHICLE ADD TEFLON TAPE TO FRONT AXLE VENT PLUG THREADS. *EH
0301390102005-03-07. Service bulletin. ENGINE AND ENGINE COOLING. INSUFFICIENT HVAV SYSTEM COOLING HISSING NOISE ON ENGINE SHUT OFF. *EH
0300890212005-03-07. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. NEW VEHICLE PRE DELIVERY INSPECTION PERCEIVED FUEL ECONOMY AND DRIVER INFORMATION CENTER SETTINGS. *EH
990138006A2005-03-07. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. J-43600 ACR 2000 ESSENTIAL REFRIGERANT RECOVER/RECHARGE EQUIPMENT. 1993-2005 PASSENGER CARS AND LIGHT TRUCKS. *TT
0403990012005-02-17. Service bulletin. SUSPENSION. NEW AIR SUSPENSION PRESSURIZATION PROCEDURE. *EH
0208440072005-02-16. Service bulletin. STRUCTURE:BODY. NEGATIVE IMPACT OF DEALER INSTALLED CLOTH VINYL ROOFS ON XM RADIO AND OR ONSTAR SYSTEMS. THIS SERVICE BULLETIN REPLACES 020844007. *EH
0406040402005-02-16. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. IDLE INSTABILITY, LOW OR ROUGH IDLE WITH ELECTRONIC THROTTLE CONTROL. *TT
0003100022005-02-15. Service bulletin. WHEELS. CHEMICAL STAINING OF CHROME WHEELS. *EH

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