Original post by: oldturkey03 ,
From [http://www.ehow.com/how_7393493_clear-pontiac-engine-codes.html|here.] "No matter what kind of Pontiac vehicle you drive, at some point you're sure to come across a situation where the check engine light goes on and will require the error code to be cleared out. Error codes are triggered when your Pontiac's computer detects a mechanical issue with the car and then illuminates the check engine light. Once the problem is fixed, the code will need to be cleared out to turn off the check engine light. The process is the same regardless of what year, make or model of Pontiac you drive. 1 Open your hood and familiarize yourself with the components under the hood. 2 Look for the battery, which will be in various locations depending on your specific year and model. The battery usually is located in one of the corners of the engine compartment. It will be a square box with two cables connected to it. If you cannot visually locate the battery, consult your owner's manual for specific location. 3 Use the adjustable wrench to disconnect the negative battery clamp. It will be connected to a black cable, and the metal terminal coming out of the battery will be marked by a minus sign. 4 Wait for a minute with the negative battery clamp disconnected. 5 Insert the key into your Pontiac's ignition, and turn on the vehicle. Look on the instrument panel on the dashboard to confirm the check engine light has gone off. Hope this helps, good luck.