No heat?

Addison · 2009-02-27T09:43:09+00:00

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!

2008 CHEVROLET UPLANDER

18,000 MILES • 6 CYL • FWD • AUTOMATIC

JACOBANDNICKOLAS

✓ASE Certified Mechanic
110,194 POSTS

Check the blend air door. It is located near the heater core. If it is stuck, then you won't get heat

Jul 10, 2020 at 10:52 AM (Merged)

FREEMBA

✓ASE Certified Mechanic
1,152 POSTS

Hello,
I saw your other posts before seeing this one, so I've responded several times.

The blend door actuator on the drivers side (closest tot he floor) is most likely the one which controls the heater door. Remove the actuator and turn the rod by hand. with the engine running and at normal temperature you should then feel heat. Try this several times to be sure its the proper one. if so then repalce the actuator.

Jul 10, 2020 at 10:52 AM (Merged)

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