2008 Hummer H2 Technical Service Bulletins

942 technical service bulletins (TSBs) are on record for the 2008 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.

• 10246951Oct 1, 2012Equipment. Programming And Activation Of Replacement OnStar Modules.
• 10055803Jul 1, 2012Transmission and drivetrain. Cadillac/chevrolet/gmc/hummer/pontiac: there is slipping or have no fourth, fifth or sixth gear and malfunction indicator lamp (mil) would be on, with diagnostic trouble code (dtc) p0796 found as active.
• 10044229Apr 1, 2012Engine cooling. Gm: diagnosis and repair- malfunction indicator lamp illuminated, reduce engine power message displayed, dtc p2135 set. Also included model sierra denali year 2010-2011
• 10037570Apr 1, 2012Body and structure. Gm: on some truck models there is some frame corrosion. *rm updated on 5/2/2012.
• 10043829Mar 1, 2012Transmission and drivetrain. Gm: loss of high speed gmlan communications, intermittent no crank, ip gage fluctuation, intermittent door look cycling, intermittent chime operation, various ip warning lamps illuminated, transmission may not shift, communication dtcs u0073, u0100, u0101, u0102 u0121 or u0140 set (repair terminals in transmission harness connector, repair open or shorted gm high speed lan circuits, open or shorted data link…
• 10038294Jan 1, 2012Seat belts. Gm: there are seat belt problems: difficulty latching and unlatching buckle. Buckle release button is sticking. Seat belt warning light illuminated. Likely caused by sticky beverages that are spilled into the buckle assembly. *rm updated 4/3/12.
• 10032332Dec 1, 2011Electrical system. Gm/hummer/saab: intermittent illumination of mil, service lamps, service messages, or dtc set by various control modules-diagnosing and repairing fretting corrosion (disconnect affected connector and apply dielectric lubricant). *pe updated 3/26/10. *pe updated 6/6/11. *pe updated 3/12/12.
• 10029924Dec 1, 2011Air bags. General motors: diagnostic information for intermittent restraints, air bag (sir) indicator/lamp on with dtc(s) b0012, b0013, b0016, b0016, b0019, b0020, b0022, b0023, b0026, b0033, b0040, b0042 or b0044 set. This may be caused by a loose, missing, or broken connector position assurance (cpa) retainer at the air bag for the set dtc. Includes trailblazer ext. *pe updated 8/16/10. *pe updated 3/12/12.
• 10037184Oct 1, 2011Seat belts. Gm: service bulletin explaining when the safety belts are supposed to lock. *rm updated 12/6/11.
• 10036464May 1, 2011Engine cooling. Buick/cadillac/chevrolet/gmc/hummer/pontiac/saab: oil consumption and/or exhaust smoke-possible pcv baffle or lifter concern. Upon inspection, obvious oil will be found in the intake manifold and/or pcv vacuum tube. *pe updated 3/21/11. *pe updated 5/9/11. *pe updated 5/25/11. *pe updated 06/16/2011. *kb updated a second time on 06/16/2011. *kb updated 6/27/11.
• 10038759Apr 1, 2011Electrical system. Gm: onstar is making incomplete calls without the driver knowing. When have a data connection.
• 10037933Jan 1, 2011Engine cooling. Gm: the service engine soon light is on, there is also a misfire or engine noise. There are multiple possible causes.
• 10036545Oct 1, 2010Steering. Buick/cadillac/chevrolet/gmc/oldsmobile and hummer: information on pitman arm shaft seal service kit. Do not replace entire steering gear for pitman seal leak. Technicians have been replacing entire steering gears due to not being able to service just leaking pitman shaft seal. *pe updated 5/9/11.
• 10036324Sep 1, 2010Engine cooling. Pontiac/saturn/buick/gmc/chevrolet/cadillac/hummer: vehicle start and stalls after theft deterrent module replacement. Model years 2006-2011. Does not apply to vehicles with keyless access system.
• 10036550Jun 1, 2010Electrical system. Buick/cadillac/chevrolet/gmc/hummer/pontiac/saturn: additional diagnostic information for u0140 or u0073. Vehicle may exhibits some symptom(s) as door locks cycle while driving; intermittent no start; service stabilitrak dic message; speedometer and tachometer freeze while driving.
• 10022702Jun 1, 2010Engine cooling. Intermittent mil/ses, dtc p2138 with reduced engine power (repair instrument panel (ip) to body harness connector). 2005-2008 gm passenger cars and light duty trucks including saturn. *nj updated 11/19/10. *pe updated 3/30/11.
• 10032462Aug 1, 2009Steering. Saab/hummer/gm: diagnostic tips/recommendations when power steering pump replacement is necessary. Analysis of returned power steering (ps) pumps that had been replaced for noise, no power assist, no or low pressure and leaking conditions has indicated a high number of no trouble found results. All 1997-2010 vehicles and light trucks; 2010 and prior hummers h2/h3 and saab 9-7x vehicles.
• 10024405May 1, 2009Wheels. Low tire pressure, leaking cast aluminum wheels (repair with adhesive sealant). 2008 and prior gm passenger car and light duty trucks (including saturn) and hummer h2, h3 and saab 9-7x with cast aluminum wheels. *nj updated 10/23/09.
• 10011124Apr 1, 2009Suspension, Tires. 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.
• 10030106Feb 1, 2009Seat belts. General motors: the seat belt buckles not operating and /or seat belt warning light illumination, as well as difficulty latching and unlatching the buckle or the buckle release button sticking. Affects 2010 and prior gm passenger cars and trucks, including saturn.)
• 10026691Sep 1, 2008Tires. Gmc: tire pressure light stays on (reprogram rcdlr) even though tire pressure values are correct.
• 10026704Aug 1, 2008Fuel system. Gmc: fuel gauge fluctuation in park or neutral, causing the low fuel light to illuminate.
• 10026149Aug 1, 2008Transmission and drivetrain. Gmc: flare and or harsh 2-3 shifts. This condition may be caused by leaking 1-2-3-4 and 3-5-r clutch fluid seal rings (230). Models cadillacs, chevrolets, gmc, hummers, pontiacs. Equipped with 6l80 (rpo myc) or 6l90 (rpo myd) automatic transmission.
• 10026006Jul 1, 2008Electrical system, Latches, locks and linkages, Transmission and drivetrain. Gmc: loss of high speed gmlan communications, ipc warning lights on, dic messages, no crank, ipc gauge drop or fluctuation, door lock cycling , hard transmission shift, dtcs u0073, u0100, u0101, u0102, u0109, u0121, u0132, u0140, u2100 set (inspect identified electrical connections and wiring for faults).
• 10025670May 1, 2008Transmission and drivetrain. 4l60-e/4l65-e/4l70-e automatic transmission fluid leak from oil pump or bell housing area (replace torque converter hub-to-oil pump seal assembly). Attn: this bulletin applies to vehicles built prior to december 2007.
• 10025288Apr 1, 2008Transmission and drivetrain. Borg warner nr3, nr4 transfer case - parking lot shudder, binds on turns in 4 high open, crow hop (replace plastic mode fork).
• 10024636Mar 1, 2008Transmission and drivetrain. Service update for inventory vehicles only - transmission control module reprogram (low speed engine braking sensation upon automatic downshift to first gear) - expires march 31, 2009.
• 10024634Mar 1, 2008Transmission and drivetrain. Loss of high speed lan communications.
• 10024346Feb 1, 2008Transmission and drivetrain. Dtc p0878, p2714, p2723, transmission slips in 1st, 2nd, 3rd, or 4th gears and/or long garage shifts to drive, equipped with a 6l50 (myb), 6l80 (myc), or 6l90 (myd) transmission.
• 10024342Feb 1, 2008Tires. Low tire light on and/or dic check tire pressure message when cold, with rpo uj6.
• 10024285Feb 1, 2008Engine cooling. Oil leak at rear of engine. Equipped with a 4.8, 5.3, 6.0 or 6.2 v8 engine.
• 10024266Feb 1, 2008Fuel system. Use of e85 fuels in vehicles not certified by gm as being flexfuel compatible / aftermarket conversion of vehicles to operate on e85 fuels. 2008 & prior gm passenger cars and trucks not flexfuel (e85) compatible (including saturn), hummer h2, h3, also 2005-08 saab 9-7x.
• 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.
• 10020075Dec 1, 2007Electrical system. No crank/no start at times. *tt updated 1/30/08.
• 10022262Nov 1, 2007Tires. Tire pressure monitor system concerns. *kb 2008 passenger cars and trucks (including saturn). Updated 2/26/08.
• 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.
• 10022915Oct 4, 2007Visibility (wipers, defrost, mirrors). Rear wiper switch operation with rear window wiper (rpo c25).
• 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)
• 10022932Aug 1, 2007Engine cooling. Information on internal engine noise or damage after oil filter replacement. Models - 2008 and prior passenger cars and trucks (including saturn and saab) and prior hummer h2, h3.
• 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.
• 10015038Jun 1, 2007Seat belts. 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.

← All problems reported for the 2008 Hummer H2