2003 Envoy - Code P0172
So I have done a quick search on this, looking for ideas.
I have never seen this code before on this vehicle, but here is a little history on the truck.
The following information is provided, in case it might help narrow down what to look for.
1) It is used very little, and sits in the driveway.
2) In prep for an over two hour drive I did an oil change, for no other reason that to just know it had been done.
3) Drove the truck for a solid 2 1/4 hours ....... 124 miles no issues.
4) CEL pops on about 30 miles into the 124 miles trip back home.