My truck seems to be running very cool. The temp out of the heater is cool. No heat. The temp guage is runnimg cool also.
Mar 19, 2013 at 1:20 PM
1998 Gmc Sonoma Truck Seems Running Very Cool Temp Out Heater Heat Guage
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Your thermostat could be stuck open and is bad. Probably time for a replacement.
Mar 19, 2013 at 2:34 PM
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