2004 GMC Topkick Technical Service Bulletins

430 technical service bulletins (TSBs) are on record for the 2004 GMC Topkick. 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.

• 10118619Oct 5, 2012Equipment. This informational bulletin provides information on newly release bulletins used to fi the vehicles in the field the first time.
• 10246951Oct 1, 2012Equipment. Programming And Activation Of Replacement OnStar Modules.
• 10037570Apr 1, 2012Body and structure. Gm: on some truck models there is some frame corrosion. *rm updated on 5/2/2012.
• 10039488Jun 1, 2011Brakes. Gm: the abs warning light ison and abs wheel speed sensor trouble codes are stored.
• 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.
• 10036044Sep 1, 2010Suspension. Chevrolet/gmc: replacement rear stabilizer bar (relocate link brackets). If the rear stabilizer bar needs replacing, the new bar is shorter and will require relocation of the stabilizer bar link brackets.
• 10032397Sep 1, 2010Steering. Gmc/chevrolet: fluid leak at steering gear input shaft. All c series models. When repairing a power steering fluid leak at the steering gear input shaft stub seal beware that the pressure seal is not available from gm spo parts. *pe updated 3/11/11.
• 10032455Oct 1, 2009Brakes. Chevrolet/gmc: brake assist pump motor on and warning light/chime. Owners may comment when turning the steering wheel with the brake applied that the hydraulic brake assist pump turns on and the brake warning lamp and chime may sound. Models chevrolet kodiak, c4500-c7500, conventional cab, t series, tilt cab, c6500-c7500; gmc topkick, c4500-c7500, conventional cab, t series, tilt cab, t6500-t7500.
• 10032452Oct 1, 2009Brakes. Gmc/chevrolet: service brake soon indicator with dtc c0272. Some customers may state the service brake soon indicator comes on. May also comment the audible brake warning buzzer is sounding.
• 10033631Sep 1, 2009Brakes, Electrical system, Seats, Body and structure. Isuzu/gmc/chevrolet: diagnostic information for inoperative air seats, air horn and/or exhaust brake and release of new auxiliary air compressor relay and pressure switch on rpo k16 vehicles.
• 10030207Apr 1, 2009Engine cooling. Chevrolet/gmc: diesel engine turbo dtc p2563 or p003a. May encounter a concern of ses light, reduced power, low power.
• 10017214Dec 1, 2008Engine cooling. Hard start / no start outside temperatures below freezing. *tt updated 7/13/09.
• 10014886Sep 1, 2008Brakes. Location of auxiliary brake control harness/wire u86 option. *tt updated 12/2/08.
• 10025183Apr 1, 2008Body and structure. Passenger side front outside door handle inoperative (replace outside door handle).
• 10017389Apr 1, 2008Engine cooling. Service engine soon (ses) light on with reduction in engine power, diagnostic trouble codes p0202 and p2146 or p0207 and p2149 set. *tt add dtc p1294. Install revised 90 degree injector connector with harness support bracket service kit. Updated 7/18/08
• 10024283Feb 1, 2008Transmission and drivetrain. Duramax diesel injector driver codes with 6.6 engine (vin 2 - rpo lly).
• 10022764Sep 26, 2007Engine cooling. Cracked flywheel housing.
• 10021839May 1, 2007Engine cooling. Diesel engine cylinder head gasket missing thickness grade markings.
• 10022264Apr 1, 2007Engine cooling. Diesel engine - low engine power/performance, poor acceleration, eshaust smoke/hissing noise, mil/ses on, dtc's p0101, p0236. (install updated engine exhaust brake valve).
• 10021179Mar 19, 2007Engine cooling. Additional diagnostics for dtc's c0035-c0052.
• 10021330Feb 1, 2007Brakes. Brake light switch inoperative, brake warning buzzer sounding and brake warning light on, dtc's c0164, c0272 set. (remove and splice wire/remove chmsl fuse/replace stop lamp switch).
• 10020835Dec 1, 2006Engine cooling. Intermittent ses/mil lamp illuminated, reduced engine power, fuel injector driver circuit. Dtc's p0201, p0202, p0203, p0204, p0205, p0206, p0207, p0208. Cylinder bank shut down dtc's p2146, or p2149.
• 10011126Dec 1, 2006Engine cooling. Various intermittent driveability conditions - hesitation, lack of power, etc.
• 10012561Oct 1, 2006Engine cooling. Information on servicing fuel injectors to avoid contamination. *eh updated 03-19-07.
• 10020739Sep 1, 2006Transmission and drivetrain. Ml6 manual transmission-shift lever may unintentionally move to the neutral position. (replace shift shaft detent plunger).
• 10020072Jul 19, 2006Engine cooling. Turbocharger oil feed line kinked or restricted.
• 10020839May 1, 2006Engine cooling. Diagnostic information on turbocharger malfunction due to lack of engine oil for lbz, lb7, and lly duramax diesel engine.
• 10019425Mar 15, 2006Engine cooling. Diesel low power or exhaust smoke dtcs p0101 p0236.
• 10018560Jan 6, 2006Fuel system, Other or unknown. Service vme - 2006 duramax diesel engine fuel system components are not interchangeable with earlier year model vehicles.
• 10018535Jan 6, 2006Engine cooling. Oil pressure gauge reading low or near red zone.
• 10018525Jan 5, 2006Engine cooling. Turbocharger hose clearance on medium duty models c65 c75 c85.
• 10019476Jan 1, 2006Brakes. Antilock brake system (abs) lamp illuminated, diagnostic trouble code (dtc) c0550) set.
• 10019474Jan 1, 2006Engine cooling. Information on longer main bearing cap bolts required for certain 2001-2006 lb7, lly, lbz duramax diesel engines.
• 10019597Dec 1, 2005Body and structure. Revised body mount replacement - front and body mount replacement - rear.
• 10019585Dec 1, 2005Body and structure. Water intrusion into cab (inspect/replace roof marker lamp lens/bolts).
• 10017303Nov 2, 2005Fuel system. Duramax diesel pilot to main injection fuel knock noise.
• 10019012Nov 1, 2005Equipment. Availability of evaporator and blower motor housing water drain diverter to avoid water intrusion into engine harness area.
• 10017266Nov 1, 2005Fuel system, Other or unknown. Low power on hard acceleration - fuel pump sock plugging with foreign material.
• 10017208Oct 28, 2005Engine cooling. No start, hard start, loss of power, or white smoke.
• 10017169Oct 27, 2005Engine cooling. Vehicle may be brought in for service engine soon (ses) or malfunction indicator lamp (mil) light on.
• 10017160Oct 27, 2005Engine cooling. 6.6l lly engine oil leak at rear housing cover bolt.
• 10017138Oct 26, 2005Transmission and drivetrain. Customers may complain of transmission rattle or grinding noise while operating the vehicle at low engine rpms, below 1200 rpms.
• 10017129Oct 25, 2005Fuel system. Rough idle, fuel knock or smoke while driving, combustion leak type noise, or a misfire. 6.6 lly injector knock, heavy smoke during warm up cycle.
• 10017120Oct 25, 2005Engine cooling. 6.6 lly injector driver codes. Misfire, rough running, and the mil/ses light on.
• 10017069Oct 22, 2005Brakes. 12 inch parking brake drum cable adjustment.
• 10017016Oct 21, 2005Fuel system, Other or unknown. Highway speed excessive smoke and fuel knock.
• 10016868Oct 13, 2005Electrical system. Repeat auxiliary air compressor relay failure.
• 10012150Oct 1, 2005Engine cooling. Service engine soon (ses) light, p0087, p0093, p1093, low power, no start, hard start, fuel in crankcase.
• 10016564Sep 22, 2005Fuel system. Service vmx - duramax injector wiring harness support bracket kit.
• 10016542Sep 21, 2005Transmission and drivetrain. Repeat cracked flywheel housing.

← All problems reported for the 2004 GMC Topkick