If a warning or service light illuminates on the instrument panel in your '05 GMC, have the vehicle looked at and serviced by a qualified mechanic. After the vehicle has been repaired, you or your mechanic must reset the computer so that the light(s) on the instrument panel will shut off. It's important to reset the computer so that it can continue to accurately diagnose problems with the vehicle.
Things You'll Need
- Ignition key
Locate the fuse panel cover on the underside of the driver's side dashboard. Pull down on it with your fingers to open it.
Look at the diagram on the fuse panel cover and locate the Electronic Control Unit (ECU) fuse. Take the fuse puller out of the panel and pull out this fuse.
Put the key into the ignition and turn it to the "On" position but don't start the engine.
Wait for 5 minutes then replace the ECU fuse. The warning lights will flash on the instrument panel then shut off. This indicates that the computer has been reset.
- "Chevrolet Astro & GMC Safari: 1985 thru 2005 (Haynes Repair Manual)"; Ken Freund, Max Haynes; 2007
- "Chevrolet Express & GMC Savana Full-Size Van Repair Manual 1996-2005 (Haynes Repair Manual)"; Mike Stubblefield and John Haynes; 2006
How to Replace the Fuses in a Chevy Silverado
There are various models of the Chevy Silverado including the 1500, 2500 and 3500. Any of these could have a fuse that...
How to Replace the Fuses in a GMC Sierra
The GMC Sierra comes in various styles, including the 1500, 2500 and 3500. In any of these, you would use the same...
How to Remove the Rear Door Panel on a GMC Sierra
You must remove the rear door panel on a GMC Sierra if you are trying to replace the panel or the door...
How to Reset the Computer on a GMC
The computer on your GMC vehicle generates and stores error codes. An error code does not always mean that something is wrong...
How to Reset the Service Engine Light on a GMC
The service engine light on your GMC will come on when you need regular maintenance. The service light is designed to come...
How to Reset the Computer in a 1998 Chevy Truck
The computer in your 1998 Chevy truck generates and stores trouble codes based on the condition of the vehicle's emissions system. When...
How to Clear a GMC ECM
The engine control module on GMC vehicles stores a variety of error codes and engine management settings. When this stored content causes...
How to Reset a 2005 Hyundai Elantra Computer
You can reset the computer on your 2005 Hyundai Elantra from your driveway or garage to save yourself time and money. The...