Question about Pontiac Grand Prix
First make sure the cooling system is not low on coolant.This will cause cold air to come out with the heat on and on hot.I don`t know what year or type of Pontiac you have.You should always post make model and engine size.This makes it easier to know exactly what problem you could be having.The more information the better.If it is low then the other thing you have to do is pressure test the cooling system to find out where it is leaking.You could also have a bad thermostat ,temp door not working,head gasket out.Please post back with this info if possible and I`ll help you figure out what is causing your problem.Hope this helps.Good luck.
Posted on Nov 07, 2010
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
Tips for a great answer:
Jan 28, 2016 | 2005 Hyundai Tucson
Mar 26, 2015 | 2006 Suzuki Reno
Apr 01, 2013 | 1997 Plymouth Grand Voyager
BLOWING COLD,NO HOT AIR FROM HEATER,A/C BLOWS HOT AIR,A/C NOT BLOWING COLD,
COLD AIR FROM HEATER,BLEND DOOR ACUTATOR CLOSED,HVAC UNIT NOT OPERATING,
Dec 26, 2012 | 2001 Ford Taurus
Nov 22, 2012 | Cars & Trucks
Jan 17, 2010 | 2000 Saturn SL
Jun 19, 2009 | 2006 Chevrolet Cobalt
Jul 10, 2018 | Pontiac Cars & Trucks
16 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: