Question about 2008 Pontiac Grand Prix

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2008 pontiac grand prix no heat

When i turn the heat on it doesnt blow out hot

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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grease16
  • 58 Answers

SOURCE: 1998 Pontiac Grand Prix A/C Blows hot on drivers side coldeer on passenger

i have an Idea. first of all make sure that all of your vents are not plugged up. next check your heating coils to find out if only one side is hot or the other is only cold. i need more info

Posted on Jun 30, 2008

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  • 46 Answers

SOURCE: How do you relace a heater coil in 2006 pontiac grand prix?

I don't want to over step my knowledge but you car is only 3 or 4 years old. I don't think your heater core is bad, unless it is leaking, Sounds like you have a blend door problem in the HVAC system. This door is actuated by a servo motor switching from hot side to cold side. This little servo can go bad and need replacing. Just make sure you don't have any bubbles in the coolant system first as long as you havent done any thing with the coolant system you souldn't have any air in the system Hope this helps you. Please rate my solution for you thank you

Posted on Jan 19, 2009

  • 72 Answers

SOURCE: grand prix 3800 blowing only hot air please help

check the temp control switch in the dash

Posted on Jun 22, 2009

SOURCE: 2006 pontiac grand prix, heat only gets warm not

Have you checked the coolant level? If that checks out ok... With the engine fully warmed up touch the heater core hoses where they go into the fire wall (about the center of the firewall). They both should be pretty hot to the touch. You'll likely find one hot and one warm. If this is the case flushing the heater core will likely get your heat blowing out hot again.

Posted on Mar 07, 2010

  • 11 Answers

SOURCE: 2008 Pontiac Grand Prix Factory stereo color codes

attach both power and illumination wires to constant on car wires.... only way to have switched power is connecting the switched/ignition wire to a fuse

Posted on Apr 06, 2010

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1 Answer

2008 Grand Prix GXP keeps blowing the 10amp fuse for the AC. When replaced, it runs cold again until I start driving, then it blows and only has hot air once again. Very frustrating in Texas heat!


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A/C COMP Relay - try replacing the A/C compressor clutch relay # 38 in under hood fuse / relay box . ! Could be shorting out after hot . I don't won't to get to technical on you, doing voltage drop testing on the circuit . If not relay the compressor clutch coil could be going bad when heating up . There are videos on you tube , testing A/C compressor clutch relay .

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2000 grand prix, temperature won go from ac to heat, stuck on ac.


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I have an 08 pontiac Grand Prix I have no heat I've checked all fluids replaced the thermostat and water outlet valve still no heat you can hear it switch over to heat but only blows cold air any...


Although you can hear the catuator it doesnt mean the flap itself is moving over. Double check it and if necessary switch it over manually to check it. One other thing you may want to check, is whether or not your vehicle has a diverter valve in the hood. A lot of newer vehicles never allow hot coolant to circulate through the heater core until u specifically request it, this keeps the car cooler inside and the ac doesn't work as hard to circulate. So if it goes faulty on some vehicles you wont get hot air because there is no hot coolant in the pipes..lol

Oct 09, 2014 | 2008 Pontiac Grand Prix

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2007 Pontiac Grand Prix heater problem


blend door actuator failing and sticking on cold setting

Nov 13, 2012 | 2007 Pontiac Grand Prix

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Heat isnt hot


If the heater hoses are hot, problem could be a blend door under the dash. The blend doors direct air thru the heater core and the vents.

Oct 08, 2012 | 2008 Pontiac Grand Prix

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I have a 2006 pontiac grand prix 3.8l my heat only blow cold aair I checked the thermostat and the heart inlet hose is hot but the outlet hose is luke war what could this be maybe clogged heater core.


Ok fellow 2006 Grand Prix owners!! By trial and error, I went through the process of elimination because my car would over heat and had no heat inside. After changing the thermostat, I had to replace the water pump. However, after you do this, you need to open the inlet hose bleeder and let the air out a few times. This solved my issue of overheating and I now have great heat!!!

Oct 23, 2011 | 2006 Pontiac Grand Prix

1 Answer

My 1998 grand prix blows no hot heat to defrost windows


Try replacing the filter between the firewall and under the wiperblade cover under the hood.

May 13, 2010 | 1997 Pontiac Grand Prix

1 Answer

2006 pontiac grand prix, heat only gets warm not hot


Have you checked the coolant level? If that checks out ok... With the engine fully warmed up touch the heater core hoses where they go into the fire wall (about the center of the firewall). They both should be pretty hot to the touch. You'll likely find one hot and one warm. If this is the case flushing the heater core will likely get your heat blowing out hot again.

Mar 07, 2010 | 2006 Pontiac Grand Prix

2 Answers

1998 Pontiac Grand Prix A/C Blows hot on drivers side coldeer on passenger


i have an Idea. first of all make sure that all of your vents are not plugged up. next check your heating coils to find out if only one side is hot or the other is only cold. i need more info

Jun 30, 2008 | 1998 Pontiac Grand Prix

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