2002 Chevy Venture Estimated cost for thermostat repair

2002 CHEVROLET VENTURE
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GOINPOSTAL71
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Heater problem
2002 Chevy Venture 6 cyl Two Wheel Drive 138000 miles

I don't believe it's the heater core. Engine temp fluctuates as if thermostat is failing.
Feb 14, 2010 at 9:06 PM
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JEDIKNIGHT2
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Shouldn't be that much...no MORE than an hour to replace a thermostat....the thermostat is going to cost you about 22 bucks from GMC and an hour time is around 120 bucks....150-200 TOPS...Alas....I feel however you are going to run into the failing head gasket problem based on your brief description...dancing temperature needle is CLASSIC symptom of it....
Feb 17, 2010 at 8:01 AM