"trac off" light on '01 Cavalier

[Highmarker]

I have a 2001 Cavalier that when I run out of CNG and switch to gasoline the "trac off" light on the dashboard comes on and stays on until I fill up with CNG, then it goes off. I can't see how the fuel system and the traction control are related. Just wondering if someone has had the same problem.

[Kevin Fern]

Re: "trac off" light on '01 Cavalier

Hi Jared, Sounds like a couple of different issues to me. About the only thing linking these two systems up, would be either a ground or serial data. Look for any suspect wiring or damage to a harness. Make sure all grounds are secure. Serial data would be a long shot, but if anything is giving a feedback, where its not normal could create issues in operation. Do you have any wiring diagrams on this vehicle? Let me know what you find out, Kevin

[Highmarker]

Re: "trac off" light on '01 Cavalier

Kevin,

Thanks for the reply. I have the service manual for the car. I'll check in them for a wiring diagram.