GM-GMC: Service Engine Soon Light, chevy silverado, oxygen sensors

Question
I have a 2000 2WD Ext Cab Chevy Silverado 5.3L; the Service Engine Soon light illuminated and engine was miss-firing. Replaced all badly worn plugs and oxygen sensors. Engine runs smoothly now, but light remains ON after having driven approx 300 miles. I've checked other obvious problem areas (gas cap, etc). Is there a way of resetting the light without taking it to a shop? Thanks.

Answer
In most cases the light will go out by itself once the problem is resolved that made the light illuminate. You can RESET the light by removing and re-installing the fuse(s) marked as ECM in the fuse panel or by disconnecting the battery for several seconds.

If the light continues to illuminate, You will need to extract the computer codes from the computer via the factory specifications to see what code(s) are being stored in the computer.

NOTE: Disconnecting the battery will cause the engine to run a little erratic until you drive it for several miles so the computer can re-learn it's proper settings.


Let me know.

thomas
autohelp