Question about 2003 GMC Envoy
Thought it was converter so i pulled the o2 sensor out of the manifold still no
Here are a few thing's to check ! Besides these checks , does the throttle plate open all the way ? No binding ? You'll need to take the air cleaner assembly off to see the throttle plate. How many miles on it, possible timing chain.
Posted on Dec 06, 2014
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Posted on Jan 02, 2017
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