How to Reset the Check Engine on a 2000 GMC 1500
GM's self-diagnostic computer systems work much like any other produced since 1996. Standardized on the government-mandated On Board Dia...
GM's self-diagnostic computer systems work much like any other produced since 1996. Standardized on the government-mandated On Board Diagnostics, Series II system, GM's computer systems monitor almost every aspect of the engine and drivetrain. After detecting a discrepancy in sensor input, the computer triggers a check engine light that may stay on even after the fault has been fixed. Clearing the offending code is a simple procedure, just ensure to correct the problem first.
Instructions
- 1
Drive your car down to your local Advance, Jiffy Lube, Pep Boys, O'Reilly's or Napa auto parts store. These chains have OBD-II code scanners and employees trained to use them; some charge a nominal fee for the service, while others perform it for free. Dealerships can clear codes as well, but they always charge for it.
2Turn the ignition to the "on" position but do not start the car. Step out of the vehicle while the technician plugs the code scanner into the OBD-II diagnostic port below the steering wheel. He'll need information regarding your truck's make, model year and engine displacement. After a minute or so, the scanner will read the stored codes and inform you as to the fault; the scanner will prompt the technician to clear the codes afterward.
3Pop the hood, remove the negative battery cable and allow the truck to sit for about five minutes. This alternative approach will clear the computer's codes without the use of a scanner, but it will also erase your clock settings, keyless-door codes and memory-seat settings.