2003 Envoy - Code P0172 - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum

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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 General Tech Q&A > General

General If it doesn't fit in any other forum

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Old 08-05-2019, 02:11 PM
harcosparky harcosparky is offline
Junior Member
2003 GMC Envoy SLE
Carbon Metallic 4.2L I6 2WD
Join Date: Aug 2014
Location: Baltimore, MD
Posts: 12
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.
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Old 08-09-2019, 02:14 PM
cheneil43 cheneil43 is offline
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Join Date: Jul 2019
Posts: 6
i got the same issue. my mechanic diagnosed it with leak at the intake manifold. twas a long process but he fixed it and no codes anymore.
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