2007 Pontiac Grand Prix heating/cooling

2007 PONTIAC GRAND PRIX
23 MILES • 3.8L • V6 • FWD • AUTOMATIC
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NICK WEBER
  • MEMBER
  • 1 POST
Its winter in Wyoming, and my heater won't blow hot air. In addition, my engine cooling fan never comes on and the car overheats in no time. Thermostat?
Mar 4, 2014 at 7:46 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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HMAC300
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 48,601 POSTS
if it's a tstat it will normally overheat in about 2 minutes. otherwise get it pressure checked for an head gasket, etc. also check your coolant level in bottle. for heat try pulling hvac fuse for 60 seconds as it may reset your actutators if not see if the actuator is getting power. you have on e on each side. also make sure both heater hoses are hot or about same temp. for cooling fan check fuses and relays in underhood fuse box first.
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Mar 4, 2014 at 12:49 PM
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