Mechanics

LITTLE HEAT

2000 GMC Sonoma

Heater problem
2000 GMC Sonoma 4 cyl Two Wheel Drive Automatic

I relace the the theromstac and still heat is warm then cool and warm again is there a heater control valve?
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Wgk450
September 18, 2010.



Check the air blend door could be the actuator/motor or the vacuum solenoid valve

Rasmataz
Sep 19, 2010.