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Oct 8, 2012 - Uploaded by GPVlog
04-08 Pontiac Grand Prix - Blower Motor Resistor ReplacementPart 1 ..... Loosen, but do not remove the two frontward screws, then remove the single rearward .... Pontiac Grand Prix StereoRemoval 2004-2008 - Duration: 4:27. by Factory Car Stereo ...Pontiac Grand Am ,HVAC, Heater Fan will not turn on.
Rule out leak from water pump. What engine is it - 3.0 3.8. Could be intake manifold gasket. Have the cooling system pressurized, about 12 lbs. and look for leak, bubbles.
check oil for coolant in oil also. Possible head gasket leak.
You may need to drain a little of the antifreeze to get level below the thermostat level. Make sure you have something to catch the antifreeze and discard it properly. Follow the water outlet from the radiator and where it goes into the intake manifold. Remove the two bolts one on each side to remove the thermostat housing. It is not necessary to take the hose off of the the housing. Remove the thermostat and make sure that both surfaces that meet when you put back together are clean and free of debris. You should get the gasket along with a new thermostat and replace both. Make sure you only use DEXCOOL to replace any antifreeze that was lost.
My 04 Grand Prix was doing the same thing. Not sure if what I found was the reason for it, but I removed the air filter portion of the intake, reached into the intake a little pulling the throttle plate down. It was caked in carbon build up. With a lint free rag and some throttle body cleaner, I scrubbed the plate and since have not had anymore issues with the car not starting. Hope this helps anyone.