Question about 2004 GMC Envoy
Have a 2004 GMC ENVOY XL and I have similiar issues with a loud air sound when I start the suv but mine does not seem to stop after a few minutes and seems to get louder when I go up hills etc. The serive engine soon light has now come on and stays on. I am afraid to drive the envoy. Please help!!
Sounds like you may have a plugged cat. you need to find out what code/s you are throwing...
Posted on Dec 09, 2008
If there is an engine code po410 you have problems with your airpump. There are bulletins out on this situation.
Posted on Oct 19, 2008
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Posted on Jan 02, 2017
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