DTC ERROR CODE P0128

2005 GMC Envoy

Tiny

dng_510

November, 28, 2009 AT 10:21 PM

Engine Performance problem
2005 GMC Envoy 6 cyl Two Wheel Drive Automatic 113125 miles

I received the error code P0128. I believe the problem is with the t-stat or with the idle air control valve. I found a t-stat to be replaced but cannot find a air control valve. Can you please help me identify where I can find one? Thanks.

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