2003 GMC L Series

Owner complaints

What owners report most

1. Exterior lighting2
2. Engine and engine cooling1
3. Vehicle speed control1
4. Visibility1

Latest complaints

• Dec 18, 2008MN
  Engine and engine cooling · Visibility

  August 2008 - fan clutch failure, $800 dealership charge to fix october 2008 - blower motor failure, no heat or air on speeds 1, 2 & 4, only on settings 3 & 5, not sure if it IS blower motor or switch. *Tr

• Dec 31, 2007GA
  Exterior lighting › Hazard flashing warning lights › Switch · Exterior lighting › Turn signal · Vehicle speed control
  Hazard lighting system, blinkers, cruise control all worked "great" up until I received a recall notice to bring my vehicle in for replacement part. I did as instructed and the part replaced, ever since then they shorted out when using my blinkers or cruise. when my blinker was going and just…

  Hazard lighting system, blinkers, cruise control all worked "great" up until I received a recall notice to bring my vehicle in for replacement part. I did as instructed and the part replaced, ever since then they shorted out when using my blinkers or cruise. when my blinker was going and just stopped..i have to push the hazard button in and out and they start working again. I several times took car back and dealership could not get it to malfunction, until finally they told me time had expired for fixing, even though I have history of repeatedly bringing in vehicle. there was nothing wrong with my perfect car until, I took car to dealership. *tr

Service bulletins

Technical service bulletins and other communications the manufacturer sent dealers about this vehicle. Ask a dealer for the full document by its number.

• 11007208This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. Technician should not use the information that is provided by the antilock braking system tire size selection.
• 11006621Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updating affected modules (with some exceptions). The updating of modules is completed in parallel instead of the technician needing to update one module at a time. This allows a more streamlined approach for dealers and customers.
• 11006421GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities. The damage is being caused either in the removal process by the technician, or inadequate packaging or shipping. This bulletin advises the dealers to be more careful not to damage the transmissions during removal and to package the core properly for return.
• 11004761This service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.
• 11004557This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.
• 11002312This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and resolution information.
• 11000576This Warranty Administration bulletin provides retail and wholesale service personnel with the policies/procedures and the warranty transaction submission procedures that support the Personal Property Damage process.
• 10252735This bulletin provides information for electrical ground repairs using new General Motors replacement fasteners with conductive finish.
• 10252163XM Audio Traffic And Travel Link Availability And Operation.
• 10251890This technical bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.
• 10250775This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large amounts of debris has flowed throughout the oiling system.
• 10249590This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.
• 10249579This PI bulletin advises the technician on the proper way to install the pistons in an engine.
• 10249011This informational bulletin provides information for dealers/technicians on Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage.
• 10248444Vehicle Recalls
• 10247681Information On Requests To Add OnStar Bluetooth Option.
• 10247552This service bulletin provides information on Concerns or Questions Regarding Installation of Dealer Installed Accessories.
• 10246952Programming And Activation Of Replacement OnStar Modules.
• 10246951Programming And Activation Of Replacement OnStar Modules.
• 10246631Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
• 10245951Canadian Customers Unable To Place Calls And Turn By Turn Inoperative In The United States.
• 10245950Canadian Customers Unable To Place Calls In The United States
• 10244274This service bulletin provides information about the Hunter wheel Road Force balancers that should be utilized for all repairs requiring balance and Road Force measurement.
• 10244214This informational bulletin provides information for the IPC odometer programming method quick reference guide.
• 10244201This service bulletin provides information for dealers on how to submit a product information report (PIR) (Canada Only).
• 10242843The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the customer that it is normal for the delay.
• 10242262This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement.
• 10235802This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
• 10235799This service bulletin provides information about the Hunter wheel Road Force balancers that should be utilized for all repairs requiring balance and Road Force measurement.
• 10235713This bulletin provides information on Warranty Administration Required Operating Procedures - 8 Points (U.S. Only).
• 10234141This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
• 10234110This service bulletin provides service information on new torque specification and installation procedure for ACDelco Spin-On Oil Filters.
• 10232287This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
• 10232136This service bulletin provides information for dealers/technicians on Exterior Lamp Condensation and Water Leaks and Replacement Guidelines.
• 10228906This Warranty Administration bulletin provides retail and wholesale service personnel with the policies/procedures and the warranty transaction submission procedures that support the Personal Property Damage process.
• 10228888This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set.
• 10227674This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. Technician should not use the information that is provided by the antilock braking system tire size selection.
• 10227056This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large amounts of debris has flowed throughout the oiling system.
• 10225615This service bulletin provides information on Module Harvesting.
• 10224820This service bulletin provides information for dealers on how to submit a product information report (PIR) (Canada Only).

Every GMC L Series model year

Bars are owner complaints, dots mark years with recalls. Select a year to open its report.