1998 GMC SONOMA
123,000 MILES
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ANONYMOUS
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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 8:20 PM
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BLAZE45
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  • 380 POSTS
Your thermostat could be stuck open and is bad. Probably time for a replacement.
Mar 19, 2013 at 9:34 PM