Heater is not putting out hot air

Asked by Oct 18, 2015 at 09:40 PM about the 2005 Pontiac Grand Prix

Question type: Maintenance & Repair

when first turn on heat car will blow hot air. but after roughly a minute it goes
to cool air. once in awhile feels a little warm but not hot. Hoses going into car
are hot, so i dont believe its heater core.

4 Answers


AC actuator module controls air blend door, and vent system. Probably is bad. As long as your temperature gauge is reading around 200 deg. if not it would be the thermostat.

2 of 2 people found this helpful.

Check your coolant level first. It's probably low.


mine does the same thing and now the blower doesnt work...sometimes. we had the thing flushed out and it fixed it for a day any tips? or ideas of how to fix this?

1 of 1 people found this helpful.

The blower is likely a failed resistor in the heat duct. That's a separate issue from the lack of heat. Check your coolant level first. If its low fill it up and the problem will likely go away.

Your Answer

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 57 nationwide Grand Prix listings starting at $8,950.

Postal Code:

Pontiac Grand Prix Experts

  • #1
  • #2
    Tom Demyan
  • #3
View All

Related Models For Sale

Used Chevrolet Impala
155 Great Deals out of 1,103 listings starting at $2,950
Used Dodge Charger
61 Great Deals out of 778 listings starting at $3,400
Used Chevrolet Monte Carlo
16 listings starting at $4,995
Used Pontiac G6
122 listings starting at $2,500
Used Chevrolet Malibu
71 Great Deals out of 1,825 listings starting at $2,495
Used Pontiac Grand Am
26 listings
Used Pontiac GTO
5 listings starting at $13,900
Used Ford Mustang
1,030 listings starting at $3,900
Used Chrysler 300
70 Great Deals out of 830 listings starting at $3,295
Used Nissan Maxima
22 Great Deals out of 404 listings starting at $1,995
Used Jeep Grand Cherokee
145 Great Deals out of 4,032 listings starting at $2,400

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.