Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum banner

1 - 2 of 2 Posts

·
Registered
2007 chevy trailblazer_lt
Joined
·
9 Posts
Discussion Starter #1
My check engine light comes on with no noticeable change in performance. It started when we had freezing and sub zero temps. I can reset it with my diag tool but in a day or so, it comes back on. I use the mid price gas and the octane rating is in the parameters in the manual. Any suggestions?
 
1 - 2 of 2 Posts
Top