2008 Pontiac Grand Prix Does Mean You Rev Your Car Heat Blow On Inside Cab Stop

2008 PONTIAC GRAND PRIX
120,000 MILES
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what does it mean if you have to rev your car for heat to blow on inside cab, if you stop rev it gets a little cooler on inside??
Nov 27, 2012 at 8:45 PM
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SATURNTECH9
  • ✓ASE Certified Mechanic
  • 30,869 POSTS
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I would see if the heater core is restricted.
Nov 27, 2012 at 8:56 PM
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