MY CAR WILL HEAT UP AND BLOW OUT HOT AIR FOR A ...

2003 Pontiac Grand Prix

Tiny

Anonymous

November, 7, 2012 AT 12:28 PM

My car will heat up and blow out hot air for a minute or two then all of a sudden it will blow out cold. If I play with the temp controls sometime it will blow out hot again. It switches instantly from hot to cold and cold to hot. Any ideas?

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1 Answer

Tiny

hmac300

November, 7, 2012 AT 2:03 PM

Check to make sure coolant is full first. Check for a vacuum leak from engine to heater, and checkt items 1 & 6 on heater.

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