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.

• 10023752Aug 1, 2008Electronic stability control. Unwanted stability activation and/or c0710 with lift/lower kits-different tires/wheel. With rpo jl4. *nj updated 12/18/08.
• 10026665Jul 1, 2008Fuel system. Gmc: fuel rail pressure sensor performance dtc p0191. May set due to actual fuel rail pressure not dropping quickly enough when the engine is shut off.
• 10026650Jul 1, 2008Engine cooling. Gmc: oil leak at turbocharger air intake pipe. Initial inspection ma reveal a leak that looks as it is coming from the rear of the engine.
• 10026108Jul 1, 2008Engine cooling. Gmc: egr low flow dtc p0401. Vehicles that are equipped with the 6.6l diesel engine rpo code lm.
• 10026007Jul 1, 2008Engine cooling. Gmc: no start, no crank, intermittent electrical operations (check for poor connections within engine wiring harness junction block).
• 10020883Jul 1, 2008Brakes, Equipment. Service stability lamp diagnostic trouble code (dtc) c0561. *kb updated 9/30/08.
• 10026697Jun 1, 2008Electrical system. Gmc: intermittent no crank and/or discharged battery. Could be caused by a loose connection at the 175 amp mega fuse located on the passenger side of the cowl.
• 10026664Jun 1, 2008Transmission and drivetrain. Gmc: leak from transmission oil cooler line fitting on vehicles built in april or may, 2008.
• 10021415Jun 1, 2008Electrical system. Fuel gauge erratic in freezing temperatures p0463. *kb with one of the following engine rpo's: ly2, ly5, ly6. Lh6, l76, l92. Updated 1/30/08. *nj updated 12/5/08.
• 10025681May 1, 2008Engine cooling. Lmm, clean exhaust filter light illuminated, mil/ses light illuminated with dtc(s) p244b and/or p2463 set (perform all si diagnostics for dtc(s) set, if ntf, replace air filter). Vehicles with 6.6l duramax diesel engine.
• 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.
• 10025602May 1, 2008Engine cooling. Service update for inventory and customer vehicles; turbocharger vane position sensor - replace; expires with 5 year/100,000 mile (160,000 km) powertrain warranty.
• 10024527May 1, 2008Exterior lighting. Turn signals flash fast after factory box removed. *nj updated 8/25/08.
• 10020722May 1, 2008Air bags. Passenger side airbag door does not flush with dash pad/warped. (reposition locking tabs on airbag panel). *kb updated 10/5/07. *nj updated 9/12/08.
• 10025402Apr 1, 2008Electrical system, Engine cooling, Transmission and drivetrain, Latches, locks…. 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, 70140 (repair backed out terminal in transmission harness connector).
• 10025224Apr 1, 2008Engine cooling. Blower motor inoperative (replace blower motor) for extended and crew cab models only.
• 10024712Apr 1, 2008Engine cooling. Duramax diesel dpf regeneration changes - vehicles equipped with the 6.6 duramax diesel engine rpo code lmm.
• 10023740Apr 1, 2008Engine cooling. Ses light on due to dtc p0101 and/or p0106 - inspect air filter and/or map sensor . With 6.6l diesel engine (rpo, lbz, lly, or lmm). *nj updated 5/13/08.
• 10024793Mar 1, 2008Electrical system. Left or right power outside mirror inoperative (inspect wire harness).
• 10024785Mar 1, 2008Brakes. Diagnostic information on mil/ses with dtc p0171 (fuel trim system lean bank 1) and/or p0174 (fuel trim system lean bank 2) after brake master cylinder replacement.
• 10024601Mar 1, 2008Transmission and drivetrain. Dtc u0101, no engine crank and no tech ii communication with tcm. Equipped with allison lct1000 (rpo-mw7) automatic transmission.
• 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.
• 10024344Feb 1, 2008Engine cooling. Possible engine oil leak due to pcv freeze-up, equipped with the 4.8, 5.3, 6.0, and 6.2 v-8 engines.
• 10024342Feb 1, 2008Tires. Low tire light on and/or dic check tire pressure message when cold, with rpo uj6.
• 10024341Feb 1, 2008Fuel system. Duramax diesels with dtc p009e, vehicles equipped with the 6.6 duramax diesel engine rpo code lmn. *nj updated 4/7/08.
• 10024285Feb 1, 2008Engine cooling. Oil leak at rear of engine. Equipped with a 4.8, 5.3, 6.0 or 6.2 v8 engine.
• 10024282Feb 1, 2008Engine cooling. Engine stalls after being remote started.
• 10024281Feb 1, 2008Tires. Check low tire / aftermarket wheels / tire pressure monitor / fmvss 138 with (rpo uj6).
• 10024225Feb 1, 2008Transmission and drivetrain. Current or intermittent dtc p0741 tcc stuck off. Equipped with 4l60e, 4l65e or 4l70e (rpo m30, m32, m70) automatic transmission.
• 10024204Feb 1, 2008Engine cooling. Short duration cold start lifter tick noise. Equipped with the 5.3 or 6.0 active fuel management engines.
• 10023434Feb 1, 2008Brakes. Unwanted abs or valve activation on low speed turns. With stabilitrac (rpo jl4). *nj updated 4/1/08.
• 10022916Feb 1, 2008Transmission and drivetrain. Diagnosis for service fast learn adapts fails, no forward or no reverse. *nj updated 4/1/08.
• 10023474Dec 13, 2007Latches, locks and linkages. Outside door handle loose, inoperative or does not retract.
• 10020881Dec 13, 2007Air bags. Air bag indicator light is on. *kb updated on 12/13/07.
• 10023994Dec 1, 2007Brakes. Service stabilitrak message c0196 and/or u2142.
• 10023772Dec 1, 2007Transmission and drivetrain. Dtc p0756, p0796, p2714, p2723, tcc shudder or harsh engagement, harsh shifts, water in transmission - keywords code converter fluid torque. Equipped with 6l50, 6l80 or 6l90 (rpo's myb, myc, myd) automatic transmission.
• 10023771Dec 1, 2007Transmission and drivetrain. Dtc p0751, p0756, p0776, p0796, p2714, p2723, harsh tcc engagement. Equipped with 6l80 (rpo myc) automatic transmission.
• 10023760Dec 1, 2007Transmission and drivetrain. U0106 loss of communication with glow plug control module. Equipped with the 6.6l duramax diesel engine rpo code lmm.
• 10023755Dec 1, 2007Electrical system. Sir light on, dtc's b0085, b0086, b0087 and b0088.
• 10023744Dec 1, 2007Transmission and drivetrain. 4 wheel drive inoperative front axle will not engage - keywords clunk grind growl k2 k3 equipped with a 9.25 front differential. *nj updated 2/27/08.
• 10023722Dec 1, 2007Electrical system. No start/no crank - loss of high speed gmlan communication.
• 10023721Dec 1, 2007Engine cooling. High idle, elevated idle, and pto all different options.
• 10023636Dec 1, 2007Engine cooling. Service update for inventory vehicles only - cold start p1400 on-board diagnostic (obd) system improvement - reprogram ecm-expires june 30, 2008.
• 10022901Dec 1, 2007Engine cooling. Engine has low power on acceleration or when towing. Equipped with the 6.0l ly6 and l76 engine. *nj updated 1/29/08.
• 10022592Dec 1, 2007Engine cooling. Duramax diesels with ses light and dtc p0402. *kb updated 2/27/08.
• 10021081Dec 1, 2007Tires. Tire sidewall irregularities. *kb updated 1/30/08.
• 10020075Dec 1, 2007Electrical system. No crank/no start at times. *tt updated 1/30/08.
• 10020031Dec 1, 2007Electrical system. Crank no start, rough running, or dtc p0335. *tt equipped with 5.3l, 6.0l, 6.2l engines. Updated 1/30/08.
• 10022913Oct 4, 2007Tires. Unable to lower spare tire from underneath the vehicle.
• 10023936Oct 1, 2007Transmission and drivetrain. Whine type noise coming from rear of vehicle (diagnose and replace rear propeller shaft).

← All problems reported for the 2008 GMC Sierra