In reply to 29th Jan 2007, 08:58

24th Jun 2015, 22:15

I have the same problem with 2003 GMC Envoy XL, and they changed all sensors and even the gauge cluster, and the light is still on; no one knows why.

In reply to 29th Jan 2007, 08:58

16th Apr 2016, 01:38

This seems to be a common problem with the Envoy. I have had three similar warning lights; the problem in my case was a leaky gas cap seal. Gas caps aren't cheap, but this solved my problem. For those who have a DTC reader, the code displayed in my case was 0404.