I have a 99 Tahoe, its runs beautifully, but just recently the SES light came on. I got it checked out by GM and they said that both rear 02 sensor went out. But then he said its impossible for both to go out at the same time, so its got to be the wiring or the harness, is he right? Where is it on my truck, and is it possible for me to fix it myself?
have the same problem?
Tuesday, December 16th, 2008 AT 5:35 PM