A friend recently had the Cat. Converter replaced. A aftermarket one was used. Now the check engine light stays on all the time. He has tried clearing all the codes. The vehicle has 104 thousand miles on it.
A GM dealer told him that if a aftermarket Cat. Is used this sometimes happens, and there is nothing that can be done about it.
Any truth to this?
Thanks for you help
Friday, November 9th, 2007 AT 9:40 AM