2004 Hummer H2 Technical Service Bulletins

538 technical service bulletins (TSBs) are on record for the 2004 Hummer H2. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 10026804Oct 1, 2008Transmission and drivetrain. Gmc: fluid leak from transmission oil cooler lines due to corrosion. All 2000-2006 light duty trucks equipped with the light duty automatic transmission.
• 10025770Sep 5, 2008Equipment. Some customers may comment on various hvac concerns including temperature doors defaulting to full hot position or unable to obtain defrost position.
• 10026704Aug 1, 2008Fuel system. Gmc: fuel gauge fluctuation in park or neutral, causing the low fuel light to illuminate.
• 10025148Apr 1, 2008Steering. Clunking noise under hood and can be felt in steering wheel and/or steering column (replace upper intermediate steering shaft [I-shaft] assembly).
• 10012707Feb 1, 2008Engine cooling. 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.
• 10032850Jan 1, 2008Tires, Equipment. General motors: information on tire radial force variation. Vehicle must be driven before measuring tires on equipment hunter gsp9700 toensure removal of any flatspotting. Models include all gm passenger cars and light trucks, as well as certain hummers, saabs, and saturns.
• 10014497Nov 1, 2007Exterior lighting. Headlamps condensation and replacement guidelines. Kaperii. *tt 1993-2008 gm passenger cars and trucks including saturn. *kb updated 2/26/08.
• 10022914Oct 4, 2007Electrical system. One of the following concerns when programming the mileage or the hours into an exchange instrument panel cluster that is received from an electronic service center (esc).
• 10023218Sep 1, 2007Electrical system. Service alert: concerns with aftermarket fuses in gm vehicles 2008 and prior gm passenger cars and light duty trucks (including saturn)
• 10019884Aug 1, 2007Engine cooling, Fuel system. 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.
• 10021447May 1, 2007Tires. Information on proper tire pressure. All gm passenger cars and light duty trucks from 2007 and prior.
• 10022260Apr 1, 2007Engine cooling. Front blower motor inoperative or may not shut off in extremely low ambient temperature conditions.
• 10021021Feb 22, 2007Engine cooling. Service vme. Supplement to 00-02-35-003l. Update on new I-shaft.
• 10021019Feb 22, 2007Transmission and drivetrain. Slip condition in 2nd, 3rd, or 4th. Damaged 2-4 or 3-4 clutch. *kb updated 10/31/07.
• 10012089Feb 1, 2007Steering. Clunking noise under hood and can be felt in steering wheel. *eh updated *eh updated.
• 10021113Dec 1, 2006Other or unknown. Car and truck fix it right the first time issues. This bulletin includes 2007 and prior passenger cars and trucks including saturn.
• 10021103Dec 1, 2006Transmission and drivetrain. Delayed engagement when shifting into these positions. Park into reverse, nuetral into drive, nuetral into reverse, and park into drive. This bulletin includes all 2000 - 2007 gm light duty trucks.
• 10020874Sep 23, 2006Suspension. Left front axle shaft difficult to remove. Axle differential leak seal shaft.
• 10020763Sep 1, 2006Suspension. Information on proper wheel changing procedures and cautions. 2007 and prior gm passenger cars and trucks including saturn.
• 10020762Sep 1, 2006Fuel system. Fuel system treatment plus, fuel sending unit corrosion and fuel system deposits. 2007 and prior gm passenger cars and trucks including saturns.
• 10020840May 1, 2006Electrical system. Updated transfer case connector service kit now available for transfer case speed sensor wire harness connector that comes loose or connector retainer clip breaks. 2007 and prior gm light duty trucks.
• 10020832May 1, 2006Electrical system. Instrument panel, body and general wiring harness repair. 2007 and prior gm passenger cars and trucks.
• 10019852Mar 1, 2006Suspension. Revised upper control arm replacement.
• 10018544Jan 6, 2006Seats. Heated seat inoperative or shut off in 30 seconds. Diagnostic trouble codes b2435, b2440, b3606 and/or b1825 set in the drivers seat module.
• 10017395Nov 7, 2005Suspension. Rear air suspension - trim height tool set.
• 10017299Nov 2, 2005Transmission and drivetrain. Electronic transfer case unable to complete shift.
• 10017239Oct 29, 2005Suspension. Rear air suspension in-op dtc c0563.
• 10017176Oct 27, 2005Suspension. Service air suspension message after replacing the air suspension compressor assembly from a single stage compressor to a dual stage compressor. May also have a current or history code c0660 and/or c0712.
• 10017144Oct 26, 2005Steering. Lack of steering assist when stopped or during parking lot type maneuvers. 99 - 05 chevrolet/gmc/cadillac/hummer h2 all full size trucks utilities and vans.
• 10017091Oct 24, 2005Visibility (wipers, defrost, mirrors). Service vme - sunroof motor replacement information.
• 10017764Oct 1, 2005Seats. Unwanted/loose seat movement.
• 10016711Sep 28, 2005Brakes. 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.
• 10017832Sep 1, 2005Engine cooling. I/m readiness as part of emission inspection and maintenance program for obd ii vehicles.
• 10015018Sep 1, 2005Equipment. Information on upgrading certain onstar generation 5 analog/digital-ready systems to onstar generation 6 dual-mode (analog/digital).
• 10017380Aug 1, 2005Seats. Intermittent heated seats inoperative, diagnostic trouble code b3941 set.
• 10017370Aug 1, 2005Suspension. Vehicle wheel alignment requirements and recommendations. 2006 and prior passenger cars and light duty trucks.
• 10011232Aug 1, 2005Seats. Memory seat may not return to requested position.
• 10017463Jul 1, 2005Electrical system. Battery and charging system electrical diagnostics. 1997 - 2006 all gm cars and trucks.
• 10017518Jun 1, 2005Suspension. Revised shock absorber bolt tightening specification.
• 10017513Jun 1, 2005Body and structure. New liftgate strut ball stud tightening specification.
• 10014909May 11, 2005Suspension. Vehicle sits low or the suspension sags overnight.
• 10014906May 11, 2005Suspension. Rear air suspension leak-down.
• 10014899May 11, 2005Steering. Steering idler arm inspection procedure.
• 10014870May 11, 2005Engine cooling. 1999 - 2005 gen ii cold engine misfire at idle with possible p0171 and/or p0174.
• 10014856May 11, 2005Suspension. Rear end of the vehicle appears to sag after the vehicle sits overnight or longer.
• 10017411May 1, 2005Transmission and drivetrain. Revised front and rear drive axle fluid capacities and wheel nut torque specification.
• 10017409May 1, 2005Engine cooling. Oil leak under extreme cold temperatures (-34 degrees c) (-30 degrees f) or colder).
• 10017354May 1, 2005Transmission and drivetrain. 4l60-e/4l65-e automatic transmission second gear start, lack/loss of power when accelerating from a stop.
• 10013544Apr 21, 2005Visibility (wipers, defrost, mirrors). Windshield wiper pulse function.
• 10013533Apr 21, 2005Steering. Lack of steering assist or shudder during parking lot type maneuvers.

← All problems reported for the 2004 Hummer H2