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This could be a number of things causing this ...most common is that after you fill up the gas cap is not fully tightened...make sure it "clicks" 3 times while turning.The other common problem is that the gasket on the gas cap is old and thus does not seal the tank/fuel filler area...check with replacing the cap.If neither correct then you will need to bring to a service center or dealer to run a code check...maybe a bad O2 sensor or a code for the transmission.
Try resetting the computer. Disconnect your battery for 5-10 minutes and reconnect. This should get rid of the light if the gas cap was the problem. If it comes back on take it to an Advanced Auto or Auto zone and get an Engine Diagnostic, they're free. Hope this helps
most any sensor going bad can cause the check engine light to come on,try disconnecting the posative battery cable for 15 seconds ,then put it back on,will reset the codes, or take it to auto zone,they will test your computer for codes at no charge to you.i had a venture van my was ox. sensor. thanks robert b.
hi, this is just a reset issue. sometimes the CPU can become confused. the original warning that informed you about your gas cap is still in the cpu's memory. you will have to reset the cpu and, this will clear the warning. After the reset, it will stay off. chevy cpu's tend to do this from time to time.
I don't think this will help but I'm willing to share my experience. My gas cap light stays on all the time. I was told to buy a new gas cap. (from different stores I bought 5). Everytime I would replace the cap the light would go away for a day or 2 but returned and is still on. The Dealership said it has been happening but nothing to worry about. I have had no troubles because of it, just annoying.