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1999 Pontiac Grand Prix blown head

Tiny
SWAVELS
  • MEMBER
  • 1999 PONTIAC GRAND PRIX
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 80,000 MILES
I had my car checked at auto zone bc the service engine light came on with no prior problems except the blower on the fan wouldnt work on settings 1-4. So they said change the spark plug. Did that and died 100 ft down the road and friend says its a blown head gasket. Is there an exact way to check thats what the problem is before taking it to a shop? Would the blower not working properly cause water to get into my engine and blow it? I just cant afford to spend $500 is thats not the problem. And another? Is how do you tell what sunroof motor you have and is there a way to tell if its an after market one since I bought the car used?
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Thursday, February 19th, 2009 AT 4:47 AM

1 Reply

Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,750 POSTS
The blower motor problem is caused by a bad blower motor resister and has nothing to do with coolant in the engine. The next thing is if there is coolant in engine its most likely caused by a leaking intake manifold gasket and not a bad head gasket. You can call a gm dealer with the last eight digits of the vin number and they can tell you if its a factory roof
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Thursday, February 19th, 2009 AT 6:15 AM

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