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Service bulletins for the 2006 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.

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

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By component

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Bulletins, newest first
0500890602005-12-03. Service bulletin. UNKNOWN OR OTHER. CAR AND TRUCK FIX IT RIGHT THE FIRST TIME ISSUES AND BULLETINS RELEASED WEEKS OF AUGUST 22, 2005 AND AUGUST 29, 2005. *TT
030604017A2005-12-02. Service bulletin. FUEL SYSTEM, DIESEL. INFORMATION ON DIESEL FUEL ADDITIVES. 2006 AND PRIOR LIGHT DUTY AND MEDIUM DUTY TRUCKS AND 2006 AND PRIOR ISUZU COMMERCIAL MEDIUM DUTY MODELS. *TT
0006040332005-12-02. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. I/M READINESS AS PART OF EMISSION INSPECTION AND MAINTENANCE PROGRAM FOR OBD II VEHICLES. *TT
0506040602005-12-02. Service bulletin. ENGINE AND ENGINE COOLING. POWERTRAIN CONTROL MODULE (PCM), ENGINE CONTROL MODULE (ECM), TRANSMISSION CONTROL MODULE (TCM) DIAGNOSTIC TROUBLE CODE(S) (DTC)(S) P0601, P0602, P0603, P0604, P1621 SHARED IN MULTIPLE MODULES. *TT
0503100122005-11-11. Service bulletin. TIRES. USE RECOMMENDED TIRE MOUNTING LUBRICANT TO PREVENT TIRES FROM SLIPPING ON CHROME WHEELS. 2006 AND PRIOR PASSENGER CARS AND LIGHT DUTY TRUCKS (INCLUDING SATURN). REPLACES 93-3-6, 93-3-11, 93-3E-63, 93-3E-103, 93-169-3E, AND T-93-93. *TT
0506030022005-11-09. Service bulletin. ELECTRICAL SYSTEM. BATTERY AND CHARGING SYSTEM ELECTRICAL DIAGNOSTICS. 1997 - 2006 ALL GM CARS AND TRUCKS. *TT
35682005-11-08. Service bulletin. POWER TRAIN. SLIP CONDITION IN 1ST, 2ND 3RD OR 4TH/DAMAGED FORWARD CLUCTH, 2-4 BAND 3-4 CLUTCH. 2006 ALL CADILLAC, CHEVROLET, GMC, BUICK, AND CHEVROLET FULL AND MID-SIZED TRUCKS AND UTILITIES. *TT
0507300182005-11-05. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. 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. 2005-2006 BUICK, CADILLAC, CHEVROLET AND GMC LIGHT DUTY TRUCKS. *TT
0503070092005-11-04. Service bulletin. SUSPENSION. VEHICLE WHEEL ALIGNMENT REQUIREMENTS AND RECOMMENDATIONS. 2006 AND PRIOR PASSENGER CARS AND LIGHT DUTY TRUCKS. *TT
34242005-11-02. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). ELECTRONIC TRANSFER CASE UNABLE TO COMPLETE SHIFT. *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
33912005-09-28. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. 4L60E/4L65E AUTOMATIC TRANSMISSION MAY EXPERIENCE A CONDITION OF DISTRESSED TRANSMISSION FLUID AND/OR SLIPPING, LATE OR MISSED SHIFTS IN 2ND, 3RD, AND 4TH. *TT
0509400022005-05-16. Service bulletin. SEAT BELTS; SEAT BELTS:FRONT. SAFETY BELT LOCKING CONDITIONS (NORMAL OPERATING CHARACTERISTIC). 2005-2008 GM PASSENGER CARS AND LIGHT DUTY TRUCKS (INCLUDING SATURN) . *TT UPDATED 04-27-07. *KB UPDATED 11/29/07. *NJ
0108420012005-05-04. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. HEADLAMPS CONDENSATION AND REPLACEMENT GUIDELINES. KAPERII. *TT 1993-2008 GM PASSENGER CARS AND TRUCKS INCLUDING SATURN. *KB UPDATED 2/26/08. *NJ
33912005-04-21. Service bulletin. ELECTRICAL SYSTEM. UNWANTED OPERATION OF THE HAZARD FLASHERS. *EH
33862005-04-21. Service bulletin. STEERING:HYDRAULIC POWER ASSIST SYSTEM. LACK OF STEERING ASSIST OR SHUDDER DURING PARKING LOT TYPE MANEUVERS. *TT
30452005-04-20. Service bulletin. ENGINE AND ENGINE COOLING. SHUDDER OR BIND ON TRUNS IN 4 HI. *EH UPDATED 03-01-07. *KB
0002350032005-02-11. Service bulletin. STEERING. CLUNKING NOISE UNDER HOOD AND CAN BE FELT IN STEERING WHEEL. *EH UPDATED *EH UPDATED. *KB
0403100012005-01-03. Service bulletin. SUSPENSION; TIRES:TREAD/BELT. TIRE PUNCTURE REPAIR PROCEDURES FOR ALL CARS AND LIGHT DUTY TRUCKS. 2008 AND PRIOR GM PASSENGER CARS & LIGHT DUTY TRUCKS (INCLUDING SATURN) AND HUMMER H2, H3 AND SAAB 9-7X. *TT UPDATED. *KB UPDATED 4/11/08. *NJ UPDATED 8/4/09. *PE
31702004-12-02. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. HARSH 1-2 SHIFT. *EH
31362004-11-04. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. THE 4L60E/4L65E AUTOMATIC TRANSMISSION SLIP CONDITION IN 2ND, 3RD, OR 4TH GEAR. ALSO TO INCLUDE THE PONTIAC GTO 2005. *TC
30892004-10-04. Service bulletin. ELECTRICAL SYSTEM. SERVICE ENGINE SOON LIGHT AND REDUCED ENGINE POWER WITH A DIAGNOSTIC TROUBLE CODE P1516. DIAGNOSTIC TROUBLE CODES P0120, P0220, P1514, P1515, P1518 AND P2135 MAY ALSO BE PRESENT. *TT
3046A2004-09-27. Service bulletin. FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM. FUEL GAUGE FLUCTUATION IN PARK OR NEUTRAL. *TT
040844009A2004-08-03. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. XM DIGITAL RADIO RECEIVER ORDERING PROCESS. *MJ PARTS RESTRICTION ON ORDERING XM DIGITAL RADIO RECEIVER. 2002-2006 PASSENGER CARS AND TRUCKS (INCLUDING SATURN). *TT
030730007A2004-03-04. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. ENGAGEMENT TIME OF ELECTRONICALLY CONTROLLED TRANSMISSIONS IN GENERAL MOTORS VEHICLES. VARIOUS MODELS INCLUDING 2000-2006 ALL LIGHT DUTY TRUCKS. *TT

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