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Service bulletins for the 2005 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.

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

By type

By component

By trouble code

By topic

Bulletins, newest first
0603100102007-01-08. Service bulletin. SUSPENSION. INFORMATION ON PROPER WHEEL CHANGING PROCEDURES AND CAUTIONS. 2007 AND PRIOR GM PASSENGER CARS AND TRUCKS INCLUDING SATURN. *KB
0500890782007-01-08. Service bulletin. FUEL SYSTEM, GASOLINE. FUEL SYSTEM TREATMENT PLUS, FUEL SENDING UNIT CORROSION AND FUEL SYSTEM DEPOSITS. 2007 AND PRIOR GM PASSENGER CARS AND TRUCKS INCLUDING SATURNS. *KB
34622006-12-22. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. BLOWER MOTOR IS IN-OPERABLE/ WILL NOT SHUT OFF/ DEAD BATTERY. *KB
0506040352006-05-08. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE; FUEL SYSTEM, GASOLINE. USAGE OF E85 FUELS IN GM VEHICLES. 1997 - 2008 ALL GM CARS AND TRUCKS. 1997 - 2008 ALL SATURN VEHICLES. *TT UPDATED. *KB UPDATED ON 10/22/07. *NJ
0603080022006-05-05. Service bulletin. SUSPENSION:FRONT:CONTROL ARM:UPPER ARM. REVISED UPPER CONTROL ARM REPLACEMENT. *TT
0503100202006-03-31. Service bulletin. TIRES. USE OF NITROGEN GAS IN TIRES. *AK 2015 AND PRIOR GM PASSENGER CARS & TRUCKS (INCLUDING SATURN) ALSO 2008 AND PRIOR HUMMER H2, H3, SAAB 9-7X. UPDATED 5/12/08. *NJ UPDATED 04/15/2014 *JS
3287B2006-01-06. Service bulletin. SEATS:FRONT ASSEMBLY:SEAT HEATER/COOLER. HEATED SEAT INOPERATIVE OR SHUT OFF IN 30 SECONDS. DIAGNOSTIC TROUBLE CODES B2435, B2440, B3606 AND/OR B1825 SET IN THE DRIVERS SEAT MODULE. *TT
3609A2006-01-06. Service bulletin. POWER TRAIN. HARSH 1-2 SHIFT, MALFUNCTION INDICATOR LAMP ILLUMINATED, DIAGNOSTIC TROUBLE CODE P0894 STORED IN PCM. *TT
0508510052005-12-05. Service bulletin. STRUCTURE:BODY. CLOUDY SPOT IN PAINT AFTER PROTECTIVE COVERING IS REMOVED (HEAT AREA). 2005 - 2006 GM PASSENGER CARS AND TRUCKS. *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
050844026A2005-12-02. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). NAVIGATION RADIO LOSES SOME OPTIONS, DIMS OR GOES BLANK AFTER A FEW HOURS OF USE (BULLETIN CANCELLED-NO ACTION REQUIRED). *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
0508500122005-11-30. Service bulletin. SEATS. UNWANTED/LOOSE SEAT MOVEMENT. *TT
0503090072005-11-09. Service bulletin. SUSPENSION. REVISED SHOCK ABSORBER BOLT TIGHTENING SPECIFICATION. *TT
0508660042005-11-09. Service bulletin. STRUCTURE:BODY:HATCHBACK/LIFTGATE. NEW LIFTGATE STRUT BALL STUD TIGHTENING SPECIFICATION. *TT
0506030022005-11-09. Service bulletin. ELECTRICAL SYSTEM. BATTERY AND CHARGING SYSTEM ELECTRICAL DIAGNOSTICS. 1997 - 2006 ALL GM CARS AND TRUCKS. *TT
0500900042005-11-07. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. REVISED FRONT AND REAR DRIVE AXLE FLUID CAPACITIES AND WHEEL NUT TORQUE SPECIFICATION. *TT
0506010142005-11-07. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. OIL LEAK UNDER EXTREME COLD TEMPERATURES (-34 DEGREES C) (-30 DEGREES F) OR COLDER). *TT
35172005-11-07. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY. SUNROOF REVERSES DIRECTION WHEN CLOSING. *TT
3367A2005-11-07. Service bulletin. SUSPENSION:FRONT:SPRINGS:AIR SUSPENSION SYSTEM. REAR AIR SUSPENSION - TRIM HEIGHT TOOL SET. *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
0508500082005-11-05. Service bulletin. SEATS:FRONT ASSEMBLY:SEAT HEATER/COOLER. INTERMITTENT HEATED SEATS INOPERATIVE, DIAGNOSTIC TROUBLE CODE B3941 SET. *TT
0503070092005-11-04. Service bulletin. SUSPENSION. VEHICLE WHEEL ALIGNMENT REQUIREMENTS AND RECOMMENDATIONS. 2006 AND PRIOR PASSENGER CARS AND LIGHT DUTY TRUCKS. *TT
0503100102005-11-04. Service bulletin. SUSPENSION. CORROSION OF BOLT AND WASHER SECURING SPARE TIRE CARRIER TO BUMPER. *TT
0507300132005-11-04. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. 4L60-E/4L65-E AUTOMATIC TRANSMISSION SECOND GEAR START, LACK/LOSS OF POWER WHEN ACCELERATING FROM A STOP. *TT

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