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11-06-2009, 08:11 PM
| #1 |
| Junior Member Join Date: Oct 2009
Posts: 5
 | 97 gmc no heat 97 gmc 4.3 temp on gauge 160 degree no heat truck been running aleast 1 hr .blows only cold air .truck is not overheating any help |
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11-06-2009, 10:52 PM
| #2 |
| Full Member  Join Date: Sep 2009 Location: Wisconsin
Posts: 46
| Its a possiblty that the door to change from cold/hot in the heater assembly is stuck and not opening or closing.
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11-07-2009, 06:21 AM
| #3 |
| Senior Member  Join Date: Mar 2008 Location: N.Y.
Posts: 4,300
 | 160 is cool, do you have a 195 t-stat in it?
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11-11-2009, 01:32 PM
| #4 |
| Full Member  Join Date: Jun 2009 Location: Calico Rock Ar.
Posts: 32
| Did it do that during the summer or have you just noticed it since its got cold? Yea your vent door is probably stuck shut or your thermo is stuck open Lol Good ol' GM
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