07 GMC 4.3 L V6, Dash Display- engine hot, AC is off. Temperature hand falls to bottom. Checked under hood no steam, not boiling over. Any ideas.
have the same problem?
Saturday, March 19th, 2011 AT 1:37 PM
Have this truck scanned and you will probaly come up with a p0128 code, what it means is that your Thermostat is not working correctly and the PCM has taken action ie:hot/ac off and usaully turns the electric fan on. I have started to see this problem on few GM trucks and cars, The fix is a new T-stat and you must clear the check engine light and should return to normal after T-stat replacement.