2003 Chevrolet Express Technical Service Bulletins

469 technical service bulletins (TSBs) are on record for the 2003 Chevrolet Express. 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.

• 10112528Nov 1, 2012Electrical system. This Preliminary Information communication provides information to the technician about vehicles that during battery parasitic drain test, there may be some confusion as to what the normal power consumption reading should be from the OnStar system. Technician should understand the power cycles of the various OnStar systems. All Generation 6, 7, 8, and 9 systems are powered up continuously for 48 hours from ignition…
• 10112523Oct 30, 2012Transmission and drivetrain, Electrical system. This Preliminary Information communication provides information to the technician about vehicles that have slip in forward ranges immediately after replacing the input housing. Technician will inspect the 3-4 clutches and the forward clutch oil feed passages for leakage between circuits. Technician should apply regulated compressed air to the 3-4 clutch feed hole and the forward clutch feed hole one at a time with…
• 10112494Oct 18, 2012Equipment. This Preliminary Information communication provides information to the technician about installing General Motors Accessory parts. Technician can check Service Information for some accessories. Technician can also contact Partech for assistance.
• 10118626Oct 10, 2012Equipment. This warranty administrational bulletin provides information on Clarification of Use - Dealer Empowerment Labor Operations and Customer Enthusiasm
• 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.
• 10044398May 1, 2012Fuel system. Gm: see document search button for owner letter. Special coverage adjustment- fuel filler neck corrosion. Water and road contaminates may become trapped in the protective conduit that covers the fuel filler pipe and may cause the pipe to corrode. The presence of fuel odor may be observed and, on some vehicles, a check engine light may illuminate.
• 10037570Apr 1, 2012Body and structure. Gm: on some truck models there is some frame corrosion. *rm updated on 5/2/2012.
• 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.
• 10042986Nov 1, 2011Seats. General motors: information provided by bulletin for all 2012 and prior general motor trucks and passenger vehicles regarding the adjustable comfort and custom upholstery of the driver and the passenger head restraint.
• 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.
• 10038295Feb 1, 2011Other or unknown. Gm: information on fixing multiple situations right the first time.
• 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.
• 10027804Nov 1, 2008Equipment, Electrical system. General motors corp: special coverage adjustment; analog onstar deactivation. *pe updated 2/17/09.
• 10026805Sep 1, 2008Equipment. Buick chevrolet gmc service campaign: see document search button for owner letter. Special coverage adjustment-analog onstar deactivation. Csc letter was received.
• 10026586Jun 1, 2008Equipment. Buick cadillac chevrolet gmc hummer oldsmobile pontiac saab saturn service campaign: see document search button for owner letter. Special coverage adjustment-analog onstar deactivation. Fcc ruled in 2002 wireless carriers would no longer re required to support analog wireless network starting in 2008. *pe csc letter was received. Updated 12/1/08.
• 10025462Apr 1, 2008Transmission and drivetrain. Diagnostic information on mn8, mt1 ses/mil illuminated, dtc p0757, harsh shift, delayed 2-3 shift, 2-3 shift flare, no third gear, slips in third gear or reverse.
• 10024345Feb 1, 2008Transmission and drivetrain, Suspension. Eaton locking differential chatter shudder noise on turns, equipped with a locking rear differential rpo g80. *nj updated 7/17/2008.
• 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.
• 10023995Dec 1, 2007Transmission and drivetrain. Transfer case front input shaft seal is popped out. Equipped with (awd).
• 10096433Sep 18, 2007Equipment, Body and structure. Merlin multiplex system when a proer/ground lug is not correctly tightened or becomes loose for any reason; erratic system operation is possible.
• 10023584Sep 1, 2007Electrical system. Engine compartment fuse block cover on some 2003-2007 chevrolet express and gmc savana vehicles may break when the cover is removed, allowing water and road contaminates to enter the fuse block.
• 10020818Jul 1, 2007Engine cooling. Diagnostic information for noise in steering and inspection of idler arm bracket. *kb updated on 09/19/07.
• 10022537May 1, 2007Steering. Steering idler arm attaching bracket fracture.
• 10021851May 1, 2007Body and structure. Various rear sliding door conditions.
• 10021019Feb 22, 2007Transmission and drivetrain. Slip condition in 2nd, 3rd, or 4th. Damaged 2-4 or 3-4 clutch. *kb updated 10/31/07.
• 10020954Oct 1, 2006Brakes. Hydro-boost unit/power brake booster appears to be leaking.
• 10020952Oct 1, 2006Body and structure. Side cargo door is hard to open. Install new hinge pins.
• 10020221Aug 19, 2006Brakes. Abs and traction off lights comes on intermittently. *tt updated 03-01-07.
• 10020072Jul 19, 2006Engine cooling. Turbocharger oil feed line kinked or restricted.
• 10019426Mar 15, 2006Engine cooling. Generation iii v8 engine piston repairs.
• 10019186Feb 16, 2006Exterior lighting, Interior lighting. Ipc, interior lights and/or headlamps flicker. *ak fb2
• 10018925Jan 25, 2006Electrical system. Installing trailer wiring harness without the z82 option.
• 10018924Jan 25, 2006Electrical system. Harness location for trailer brake installation rpo z82 and/or uy7.
• 10017243Oct 29, 2005Transmission and drivetrain. Replacement two piece propshaft information. Vibration while driving.
• 10017190Oct 27, 2005Transmission and drivetrain. 4l60e, 4l65e replacement valve body gaskets does not seem to fit.
• 10017186Oct 27, 2005Electrical system. Instrument panel cluster will not illuminate in drl mode.
• 10017154Oct 26, 2005Engine cooling. Supplement to 03-06-01-024b 4.3l lu3 l35 timing chain tensioner. Rattle-type noise coming from the engine at approximately 1800 to 2200 rpms.
• 10017023Oct 21, 2005Electrical system. Additional diagnostic information dtc p0757.
• 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.
• 10015018Sep 1, 2005Equipment. Information on upgrading certain onstar generation 5 analog/digital-ready systems to onstar generation 6 dual-mode (analog/digital).
• 10014953May 12, 2005Transmission and drivetrain. Rear axle retainer button breakage.
• 10014899May 11, 2005Steering. Steering idler arm inspection procedure.
• 10014888May 11, 2005Body and structure. The sliding door is hard to open or will not open.
• 10014878May 11, 2005Brakes. Anti-lock braking system (abs) telltale illuminated with diagnostic trouble code c0550.
• 10014870May 11, 2005Engine cooling. 1999 - 2005 gen ii cold engine misfire at idle with possible p0171 and/or p0174.
• 10017409May 1, 2005Engine cooling. Oil leak under extreme cold temperatures (-34 degrees c) (-30 degrees f) or colder).
• 10013536Apr 21, 2005Suspension. Clunk pop noise in the front suspension over bumps.
• 10013496Apr 20, 2005Transmission and drivetrain. 4l80e output carrier thrust washer changes.

← All problems reported for the 2003 Chevrolet Express