2004 Chevrolet Tahoe Q&A
2004 Chevrolet Tahoe Question: check engine light
If you constantly have to replace the same rear light bulb I suspect perhaps water is leaking into the lamp causing the bulb to blow prematurely. Unfortunately the Check Engine Light will not be related to the bulb failure. Check Engine light illumination is caused by the computer in your car seeing a fault which is causing an increase in pollution being emitted from your car. The Check Engine Light may or may not cause a related noticeable drivability problem. Best to get the problem checked out. A scan tool is needed to diagnose the problem. - patrick mannion
If the outside temp drops below 35 degrees our check engine light comes on and our Tahoe will die when idling. No mechanic can figure out what the problem is....
how do you reset the check engine light on a 2001 tahoe 5.3 liter 2wd
Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
...tion check valves may become restricted causing poor air flow resulting in illumination of the Check Engine Light. It is often recommend to replace both check valves even if a fault code is set for only one...