2005 GMC Envoy DTC error code P0128

  • 2 POSTS
  • 2005 GMC ENVOY

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.

Do you
have the same problem?
Saturday, November 28th, 2009 AT 10:21 PM

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