2008 GMC Sierra Technical Service Bulletins

317 technical service bulletins (TSBs) are on record for the 2008 GMC Sierra. 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.

• 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.
• 10037555Jan 1, 2011Seats. Gm: the driver or passenger heated seat are inoperative. They are slow to warm or may shut off. There are trouble codes set related to the ground terminal harness.
• 10037552Jan 1, 2011Transmission and drivetrain. Gm: there may be a bump noise or clunk feel when stopping or launching. This may be caused by a slip in the transmission.
• 10037544Jan 1, 2011Transmission and drivetrain. Gm: when stopping or accelerating there may be a clunk noise and its as if the vehicle is bumped from behind. This can be caused by a slip in the rear propshaft.
• 10037542Nov 1, 2010Brakes. Gm: there may be a pulsation or vibration in the steering wheel while going downhill. There could also be a rumbling noise. This is likely caused by the brakes.
• 10037516Nov 1, 2010Engine cooling. Gm: there is a diesel engine hard start when hot. Starts fine when cold. There will be no internal trouble codes.
• 10037499Nov 1, 2010Engine cooling, Fuel system. Gm: there may be reduced power and an internal trouble code in high temperatures or when near the towing limit.
• 10037407Nov 1, 2010Transmission and drivetrain. Gm: when driving uphill the transmission may not shift out of first or will slip into second gear due to a torn clutch seal. There may be two internal trouble codes stored.
• 10030591Nov 1, 2010Exterior lighting. General motors: bcm calibrations available to restore bulb outage detection on vehicles produced by a second state manufacturer, turn signals flash fast after factory box removed (upfitter). May need to have body control module (bcm) rear turn signal bulb outage detection capability changed. *pe updated 5/20/11.
• 10037146Oct 1, 2010Air bags. Gm: the air bag door may be warped or not sit flush with the instrument panel/dash.
• 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.
• 10035764Sep 1, 2010Fuel system, Engine cooling. Chevrolet/gmc: check engine light on, fuel tank hard to fill, dtcs p0442, p0446, p0455 or p0449 set (replace evaporative emission (evap) vent valve solenoid assembly and add/relocate fileter box using service kit).
• 10031424Sep 1, 2010Transmission and drivetrain. Chevrolet gmc service campaign: see document search button for owner letter. Enhanced calibration for transmission overheat in extreme cold air temperatures. Located in certain us cold weather states; alberta, british columbia, manitoba, new foundland, northwest territories, ontario, quebec, saskatchewan, and yukon. Silverado hd and sierra hd 2006-2008. *pe csc letter was received (only). Updated. *pe program been…
• 10028264Sep 1, 2010Equipment, Electrical system, Electronic stability control. General motors: during normal diagnostics and/or repair verification the abs light, traction control and/or stabilitrak indicators may be on with no dtc's displayed by the ebcm. *pe updated 11/17/10. *pe updated 3/14/11.
• 10036485Aug 1, 2010Engine cooling. Buick/chevrolet/gmc/pontiac/saab: excessive oil consumption and/or blue exhaust smoke-investigation update. In most cases did not start until the engine accumulated approximately 30,000 miles or more.
• 10036364Aug 1, 2010Engine cooling. Chevrolet/gmc: possible engine overheat or loss of coolant. Normal si diagnostics will lead to inspecting the water pump for proper operation. When water pump is removed, be sure to inspect the impeller.
• 10036524Jul 1, 2010Electrical system, Engine cooling. Cadillac/chevrolet/gmc: information on inspecting top post battery cable bolts, clamps and nuts during pre-delivery inspection (pdi).
• 10022692Jul 1, 2010Electronic stability control. Service stability lamp dtc c0710. *nj updated 3/25/11.
• 10021443Jul 1, 2010Steering. Ei07082 - power steering fluid leaking from power steering gear/rack assembly. *kb updated on 09/21/07. *nj updated 10/5/07. *nj updated 2/15/08. *nj updated 5/19/08. *nj updated 2/17/10. *pe updated 3/30/11.
• 10036564Jun 1, 2010Electrical system. Gmc/chevrolet: check trailer wiring message in dic poor connections at 7-way). This concern could be caused by a poor connection at the 7-way trailer connector. There are several manufacturers of 7-way (trailer side) connectors and no industry standard specifications for these connectors. Models avalanche, suburban, tahoe, sierra, silverado, sierra denali, yukon, yukon xl.
• 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.
• 10036546Jun 1, 2010Electrical system. Chevrolet/gmc: service trailer brake message with dtc(s) c1115, c1116, c1117, and/or c1118 (inspect wiring near parking brake pedal). This concern may be very intermittent and can occur with or without a trailer connected to truck.
• 10025668Jun 1, 2010Transmission and drivetrain, Engine cooling, Latches, locks and linkages…. Loss of high speed gmlan communications, intermittent no crank, ipc gauge fluctuation, intermittent door lock cycling, transmission may not shift, dtcs u0073, u0100, u0101, u0102, u0121, u0140 set (repair backed out terminal in transmission harness connector). Vehicles with 6 speed 6l80 (rpo myc), 6l90 (rpo myd) or hybrid two mode 2m70 automatic. Including 2008 tahoe and yukon hybrid models. *pe updated 3/28/11…
• 10024625Jun 1, 2010Electrical system. [check trailer wiring] message displayed on dic. With rpo jl1. *nj updated 3/28/11.
• 10024526Jun 1, 2010Electrical system. Service trailer brake message with dtc c1114 and/or c1112. With rpo jl1. *nj updated 3/28/11.
• 10034404Feb 1, 2010Air bags, Seat belts. Buick/cadillac/chevrolet/gmc: airbag light on, dtc b0071 and b0081 set (diagnose and replace right front seatbelt buckle, if necessary). Upon investigation, the technician may find dtc b0071 set in the passenger presence system (pps) and a dtc b0081 in the sensing and diagnostics module (sdm).
• 10030244Feb 1, 2010Transmission and drivetrain, Electrical system, Latches, locks and linkages…. Cadillac/chevrolet/gmc: locations of high speed gmlan wiring concerns. Gauges inoperative, no crank, harsh transmission shifting, no transmission shifting, door locks cycling and indicators on. *pe updated 11/17/10.
• 10034364Jan 1, 2010Engine cooling. Chevrolet/gmc: snow or ice ingestion into air cleaner element, malfunction indicator lamp (mil) illuminated, engine power is reduced message displayed, dtc p0101 set (perform repair as outlined).
• 10032324Nov 1, 2009Engine cooling. Gmc chevrolet service campaign: see document search button for owner letter. Service engine soon light illuminated-exhaust gas recirculation (egr) cooler plugging prevention.
• 10032450Oct 1, 2009Electrical system. Chevrolet/gmc: inspect for wire harness chafes near connector x108. Dealer may encounter a concern of the ses light on with reduced power. Diagnostics may reveal dtc's p0193, p0522 and/or p0652.
• 10032395Aug 1, 2009Fuel system. Gmc/chevrolet/cadillac: vehicle fuel gauge inaccurate below 1/4 tank. On rare occasions, the vehicle has an inaccurate fuel gauge reading at 1/4 or a 1/8 of a tank.
• 10026005Aug 1, 2009Exterior lighting. Gmc: stop lamps intermittently turn off after coming to a complete stop while still having pressure on brake pedal (replace stop lamp switch). *pe updated 3/1/10.
• 10019434Aug 1, 2009Engine cooling. Diesel engine glow plug trouble codes. *tt updated 3/15/10.
• 10032336Jul 1, 2009Brakes, Air bags. Gmc/cadillac/chevrolet: air bag readiness light on, service air bag message, inflatable restraint sensing and diagnostic module (sdm) corrosion (replace sdm/cut and remove carpet pad).
• 10032889Jun 1, 2009Engine cooling. Gmc/chevrolet: dtc p0101 with non gm air filter. May encounter concern of reduced power and ses light on. Diagnostics may reveal maf (mass air flow) sensor dtc p0101. If diagnostics were inconclusive its possible dtc p0101 is setting due to a non gm air filter. Non gm air filters have shown a slightly higher than normal maf reading.
• 10032888Jun 1, 2009Engine cooling. Gmc/chevrolet: engine coolant sensor dtcs p011a, p2184, and p2185. Dealer may encounter concern of ses light on or dtcs p011a, p2184 and p2185. Diesel engines have 2 ect (engine coolant temperature) sensors.
• 10032866Jun 1, 2009Electrical system. Gmc/chevrolet/cadillac: sir mil on with dtc b1325 sym 03. During a low battery/voltage condition the passenger presence system may set a b1325 sym 03 along with other faults that are caused by the low batter/voltage condition.
• 10030750May 1, 2009Air bags. Gmc/chevrolet: sir mil on and tech 2 will not communicate with sdm. Some modules may set a communication dtc u0151 against sdm. Diagnostics may lead to replacement of sdm and replacing sdm may fix the concern for a short time or it may fail again on the first or second ignition key cycle. The hd silverado and sierras only.
• 10030110May 1, 2009Fuel system, Electrical system, Engine cooling. General motors: malfunction indicator lamp (mil) illuminated, intermittent dtc p0191, slow fuel rail pressure (frp) decay, wiring harness connections, voltage fluctuations/interruptions (follow correction information below). *pe updated 11/23/09.
• 10030092May 1, 2009Fuel system. General motors: the low fuel warning light comes on or the gauge shows empty when there is fuel in the tank. *pe updated 11/04/09.
• 10030207Apr 1, 2009Engine cooling. Chevrolet/gmc: diesel engine turbo dtc p2563 or p003a. May encounter a concern of ses light, reduced power, low power.
• 10030122Apr 1, 2009Steering. General motors: the left and/or right steering wheel lower (spoke) cover is warped, loose, discolored or just fits poorly in the steering wheel. The paint finish seems to be peeling.
• 10030111Apr 1, 2009Engine cooling. Diagnostic information on malfunction indicator lamp (mil) illuminated with dtcs p0442,p0446, p0451, p0452, p0453, p0454, p0455 and replacement of fuel tank pressure (ftp) sensor/module.
• 10025303Oct 1, 2008Engine cooling. Chevrolet service campaign: see document search button for owner letter. Ecm eeprom - reprogram ecm. All 2007 and certain 2008 cheverolet silverado and express and gmc sierra and savana equipped with 6.6l duramax va diesel (rpo lmm - vin 6) engine. Csc was received. *pe updated 5/5/09. Csc letter was received.
• 10026701Sep 1, 2008Exterior lighting, Visibility (wipers, defrost, mirrors), Latches, locks and…. Gmc: bmc failure after windshield wiper operation-keywords: ajar door dome driver dimmer flasher fog haul headlight head high hazard inop inoperative lamp light lock low not on off power park radio rap repeat signal shut speed stay switch turn tow unlock unwanted window. May be due to internal bcm damage.
• 10026691Sep 1, 2008Tires. Gmc: tire pressure light stays on (reprogram rcdlr) even though tire pressure values are correct.
• 10022694Sep 1, 2008Brakes. Service brakes soon message dtc c0299. *nj updated 5/13/08. *nj updated 12/5/08. No hybrids vehicles.
• 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.

← All problems reported for the 2008 GMC Sierra