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GMC Jimmy Heater & Cooling System

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Old Feb 2, 2012 | 04:12 PM
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Default GMC Jimmy Heater & Cooling System

I have a 1982 GMC Jimmy Sierra Classic 305 - Can the heater be drained & what is the correct procedure to refill cooling system to avoid air locks? Should I run a lower thermostat during summer for towing?
 
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