Question about 2003 GMC Envoy
Severe power loss, especially when a.c. is on. Noticably better with a.c. off, but still there. Dirty fuel injectors maybe? Also, ticking noise at idle, sounds like it's from the fan - maybe
For the person with the loud engine and poor acceleration, the problem is likely the fan clutch. I think it is about 800$ to be repaired.
Posted on Nov 15, 2008
Replace fan clutch.
Posted on Sep 28, 2009
Check for a vacume leak and check battery cable connections for corrosion also get battery and alt. tested
Posted on Jun 26, 2008
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Posted on Jan 02, 2017
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