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No heat?

Tiny
ADDISON
  • MEMBER
  • 2008 CHEVROLET UPLANDER
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 18,000 MILES
Help!

We are on our second Uplander, and both have had the same exact problem.

While idling, the heater will not blow heat. Once you touch the accelerator and rev the engine, heat will flow. Upon releasing the accelerator, the air will cool after about 30 seconds, and after about a minute, it will blow continuous cold air until you hit the accelerator again.

The problem seems to be intermittent.

The thermostat has been changed, the coolant has been flushed and all air has been removed from the lines, the water pump has been changed and nothing has fixed the problem. The dealership identified the problem and agrees that it is an issue, and says that all fixes provided by the manufacturer have not worked, so they gave us an entirely different vehicle with LESS mileage, and it worked ok for about a week. It now has the SAME exact problem.

After doing some research online, I have found several other people with the same issue. Has anyone found a fix for this?

We do NOT want to go through the hassle of having to get into another vehicle, and would prefer it if the problem would just be fixed. We live in North Dakota and have a baby, so you can understand that not having any heat in our vehicle is a very important issue to us.

If anyone can help or offer any additional information on this, I would greatly appreciate it!
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Friday, February 27th, 2009 AT 9:43 AM

43 Replies

Tiny
LAZYLEGS
  • MEMBER
  • 1 POST
Hi I have a 2006 chevrolet uplander and tried everything. We had no heat at idle and very little when driving. We finally changed the heater core for the front and can't believe the difference we have lots of heat at idle and driving at any temperature it is outside. Just because the heater core is not plugged does not mean it is not defective. This fixed my heat problem 100%

This guide helped me

https://www.2carpros.com/articles/car-heater-not-working

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Friday, March 25th, 2011 AT 9:21 PM
Tiny
NCMOMOF4
  • MEMBER
  • 1 POST
Had same issue with my 2008. We took the fuses out & checked them. When we put them back it worked just fine. Also had an issue with the passenger sliding door. It would open & start dinging & would not close with any of the buttons or fob, only manually. It would ding constantly when in drive & reverse. Took out the fuse & put it back & poof. Works wonderfully. I can only hope everything continues to work!
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Sunday, September 30th, 2012 AT 2:02 AM
Tiny
OSMONDBRIAN
  • MEMBER
  • 0 POST
  • 2008 CHEVROLET UPLANDER
  • 136,000 MILES
I have a uplander when the van is in idle there is no heat. When I start to drive the heat comes on. If I start the van and let it idle for a period say 5 to 10 minutes all I get is cold air. Why?
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Monday, January 6th, 2020 AT 11:30 AM (Merged)
Tiny
CHADWEEKS
  • MEMBER
  • 2 POSTS
Had same problem on my 2007. Paid for coolant & tranny fluid flush & change and am pretty sure I didn't actually get either. Nevertheless, I added what ended up being 1/2 jug of coolant and now it's warm when I get in after 5 minutes. Make sure to use the right stuff though. Orange. Dex-III I think?
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Monday, January 6th, 2020 AT 11:30 AM (Merged)
Tiny
SAWOLZ
  • MEMBER
  • 1 POST
  • 2007 CHEVROLET UPLANDER
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 31,000 MILES
We have had this car for about 2 years and we are no longer getting any heat in the cabin. It's about as cold as the outside air even if we let the van warm up.
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Monday, January 6th, 2020 AT 11:31 AM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the heater core if its clogged-up if not replace the thermostat and go from there.
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Monday, January 6th, 2020 AT 11:31 AM (Merged)
Tiny
BILL MANNINO
  • MEMBER
  • 1 POST
  • 2007 CHEVROLET UPLANDER
  • 6 CYL
  • 2WD
  • AUTOMATIC
My chevy uplander blows cold air at idle but warms up at higher rpm's, any ideas?
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Monday, January 6th, 2020 AT 11:32 AM (Merged)
Tiny
MIKE H R
  • MECHANIC
  • 3,094 POSTS
Hello,

It sounds like you are low on coolant but to be sure lets check out this guide to see what's going on.

https://www.2carpros.com/articles/car-heater-not-working

Please run down this guide and report back.
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Monday, January 6th, 2020 AT 11:32 AM (Merged)
Tiny
COLOGHUNTER
  • MEMBER
  • 1 POST
Thanks for this post the guide showed me the blend door actuator for the temperature was out I got a new one for $78.00 all fixed! I love this site
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Monday, January 6th, 2020 AT 11:32 AM (Merged)
Tiny
KABHIGUM
  • MEMBER
  • 1 POST
  • 2007 CHEVROLET UPLANDER
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 244,000 MILES
Hi no heat when idling
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Monday, January 6th, 2020 AT 11:32 AM (Merged)
Tiny
BOLSON
  • MEMBER
  • 1 POST
We have had this problem since we have owned (close to 2 years). We have taken it to the dealer 2x for this issue, and both times were told nothing is wrong. I beg to differ. We live in North Dakota and when the van sits to "warm up", the engine actually does warm, but the vents blow cold air until the engine is revved up. Makes for very cold starts to work EVERY DAY!
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Monday, January 6th, 2020 AT 11:32 AM (Merged)
Tiny
VERISSA
  • MEMBER
  • 1 POST
  • 2007 CHEVROLET UPLANDER
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 65,000 MILES
When I start my vehicle and turn on the heater it does not heat the vehicle. I try to pre-warm the vehicle in the winter but the heater will not kick in until I am driving. And as I am driving if I am stopped it will blow cold again. The thermostat seems to indicate that the vehicle is warm but the air blowing is cold. This obviously is not an issue for the summer but in the winter it is causing some serious issues as I cannot defrost my windshield or heat the van without driving.
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Monday, January 6th, 2020 AT 11:32 AM (Merged)
Tiny
SUPERBILL01
  • MEMBER
  • 1 POST
2007 Uplanders were having problems with heaters not working when idling or at low speeds. This was caused by seals seeping or leaking anti-freeze. The heater will become "air locked" The seals were defective. I fixed mine in half an hour without removing the seals. Her is how I did it.
1. Make sure engine is cool, not running for at least 2 hours.
2. Remove coolant cap from reservoir, it will look like there is sufficient coolant in it but go to next step.
3. Remove radiator cap, top of radiator. You will notice you can not see any coolant in top of radiator. Fill with proper mix, before replacing cap, carefully clean any gunk in cap with 409 cleaner or similar cleaner, rinse. Replace cap.
4. Squeeze radiator hose along top of radiator with both hands, squeeze and release several times. Remove radiator cap and fill again. Repeat until radiator stays full. Now replace radiator cap and rill reservoir with anti freeze mix to proper level indicator on tank. Replace cap. When all air is out of radiator heater will now work.
If this happens too often you will need to put in some radiator sealer or have gaskets replaced. Chevy knows about this problem and will charge you $$$$ just to remove the air from cooling system.
Good luck.
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Monday, January 6th, 2020 AT 11:32 AM (Merged)
Tiny
TMAESTRO72
  • MEMBER
  • 1 POST
I was having the heating problems with my 07 Chevy Uplander but thanks to SuperBill01 instructions my Chevy heats like a champ!
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Monday, January 6th, 2020 AT 11:32 AM (Merged)
Tiny
MORGANANGELS
  • MEMBER
  • 1 POST
  • 2007 CHEVROLET UPLANDER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 78,000 MILES
2007 Uplander Heat Problem?

Hello!

I have a 2007 Uplander LS.
While idling, the heater will not blow heat. Once you touch the accelerator and rev the engine, heat will flow. Upon releasing the accelerator, the air will slowly cool after about 30 seconds, and after about a minute, it will blow continuous cold air until you hit the accelerator again.

After doing some research online, I have found several other people with the same issue. Here is what was done to their vehicle with no success. I have been a loyal Chevy customer all my life, but am thinking about venturing to another car dealer because no one can help with this problem and it is very frustrating that Chevy can not figure this out. PLEASE let me know if you have found a solution to this problem.

The thermostat has been changed, the coolant has been flushed and all air has been removed from the lines, the water pump has been changed and nothing has fixed the problem. The dealership identified the problem and agrees that it is an issue, and says that all fixes provided by the manufacturer have not worked, so they gave us an entirely different vehicle with LESS mileage, and it worked ok for about a week. It now has the SAME exact problem.
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Monday, January 6th, 2020 AT 11:32 AM (Merged)
Tiny
JB7011
  • MEMBER
  • 1 POST
You have a head gasket out. Tell your dealer that this is a known fact because I used to work at a dealer and this was a common problem. I had to have mine done also. They should fix it at no charge under the 100,000 mile powertrain warranty.
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Monday, January 6th, 2020 AT 11:32 AM (Merged)
Tiny
2CP-ARCHIVES
  • MEMBER
  • 4,540 POSTS
  • 2007 CHEVROLET UPLANDER
  • 134,000 MILES
No heat comes in when idling. Replaced thermostat with on results. What else can I try
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Monday, January 6th, 2020 AT 11:32 AM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Assuming it has heat off idle, I would look at a clogged heater core from lack of servicing the coolant

Roy
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Monday, January 6th, 2020 AT 11:32 AM (Merged)
Tiny
EAGLEMAN12
  • MEMBER
  • 5 POSTS
  • 2006 CHEVROLET UPLANDER
  • 3.5L
  • V6
  • FWD
  • AUTOMATIC
  • 155,000 MILES
The engine warms up normally, coolant level is ok, but the air from the heater is cold.
I do not know what to check, or how much it might cost to have it repaired.
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Monday, January 6th, 2020 AT 11:32 AM (Merged)
Tiny
JOHNNYT73
  • MECHANIC
  • 924 POSTS
Mostly this happens on GM cars with air in the system. Do you have heat when you raise the RPM to about 3000-3500?

When engine is cool. Remove radiator cap, loosen the coolant bleeder screws, start engine and let reach operating temperature, turn on the heat, begin raising the RPM to 3000 and hold for about 4 seconds (do by hand on the throttle body if cable actuated so you watch the bleeder screws), be sure to keep the coolant level up in the radiator, keep the bleeder screws open till you get good solid flow of coolant then tighten them shut, once the all the air seems to be out of the system, confirm you have heat at idle, then turn of the engine, when engine has cooled completely, check coolant level at the radiator and top off as needed.
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Monday, January 6th, 2020 AT 11:32 AM (Merged)

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