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No Heat

Tiny
DLVSD
  • MEMBER
  • 2005 CHEVROLET IMPALA
Air will come out of the vents but no heat comes out just cold air?
Monday, October 19th, 2009 AT 12:04 PM

30 Replies

Tiny
RENAUDTN
  • MECHANIC
  • 636 POSTS
Hello,

It sounds like you have a temperature blend door actuator that is not working here is a guide to help you see what you are in for when doing the job and the location of the actuator for your car below.

https://www.2carpros.com/articles/replace-blend-door-motor

this guide can help as well

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

Check out the diagrams (Below). Please let us know what you find. We are interested to see what it is. Cheers

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Tuesday, October 20th, 2009 AT 4:17 PM
Tiny
DONO1233
  • MEMBER
  • 1 POST
Thank you so much, I got an actuator for $76.00 and installed it. Took longer than I thought but all fixed!
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Monday, October 29th, 2018 AT 11:27 AM
Tiny
MORTON SPENCER
  • MEMBER
  • 1 POST
  • 2005 CHEVROLET IMPALA
Heater problem
2005 Chevy Impala 6 cyl Front Wheel Drive Automatic 6o, ooo miles

Heat coming in on passenger side but not on drivers side. Put in new thermostat and actuator but neither made a difference. Wondering what else it could be?
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Monday, January 13th, 2020 AT 6:31 PM (Merged)
Tiny
RHALL77
  • MECHANIC
  • 3,361 POSTS
Possible temp door stuck or a actuator is going bad
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Monday, January 13th, 2020 AT 6:31 PM (Merged)
Tiny
IMAPALAFAN
  • MEMBER
  • 1 POST
  • 2005 CHEVROLET IMPALA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 98,000 MILES
I have flushed the system twice and now changed the thermostat what else can it be, it appears to have water flow
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Monday, January 13th, 2020 AT 6:31 PM (Merged)
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,749 POSTS
If it is building up pressure real fast I would suspect a bad head gasket but most likely its air in the system. Ii let them run until real hot then let it cool down then recheck coolant level and repeat.
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Monday, January 13th, 2020 AT 6:31 PM (Merged)
Tiny
BETTYRUTH
  • MEMBER
  • 1 POST
  • 2005 CHEVROLET IMPALA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 56,000 MILES
The driver side will cool but not blow any heat. Does this side have a fuse or something that controls the heat.
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Monday, January 13th, 2020 AT 6:31 PM (Merged)
Tiny
JNOVACK
  • MECHANIC
  • 723 POSTS
The control panel is not working on driver side I can not find any fuses or relays for that the control panel would need to be replaced and I see you have 56000 miles on it what is your warrenty on your car if it is out of warrenty I can send you the removal and install for replaceing the control panel
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Monday, January 13th, 2020 AT 6:31 PM (Merged)
Tiny
USWJRS17
  • MEMBER
  • 2 POSTS
I have a 2004 Chevy Impala 62K miles with the same issues and I took my vehicle to the Dealership as I'm not a mechanic and they deteremined it was the temp actuator on the 04 model there are 3 as I was getting warm air on the passenger side;however it just blew cold air on the driver's side. I ended up paying $301.72 just to have this plastic piece replaced. The price on the part alone was $54.88 the labor $213.95.

Good luck, I'm now having other issues with my battery light and a few months ago I just replaced the battery, alternator and at 32K miles the waterpump also went out? I'm not happy with this vehicle.
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Monday, January 13th, 2020 AT 6:31 PM (Merged)
Tiny
JNOVACK
  • MECHANIC
  • 723 POSTS
The acuator needs to be reprogramed that is the cost of the labor butyes it also could be the acuator the your 2005 that does deturmine the temp on driver and passenger side
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Monday, January 13th, 2020 AT 6:31 PM (Merged)
Tiny
ZIGZAG457
  • MEMBER
  • 1 POST
  • 2005 CHEVROLET IMPALA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 60,000 MILES
The heater only blows warm air if the fan is on low. Once the fan is turned up to on high the air turns cold. But putting the blower back on low it will blow warm air.
Even the coolant is only luke warm after running for a long period of time.
Do I need to replace the termastat?
Thanks.
Duane
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Monday, January 13th, 2020 AT 6:31 PM (Merged)
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Yes a new thermostat would be the ticket.
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Monday, January 13th, 2020 AT 6:31 PM (Merged)
Tiny
WINDOWMAN_95
  • MEMBER
  • 2 POSTS
  • 2005 CHEVROLET IMPALA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 100,000 MILES
How do I change a termostat in my Impala [3.8 V6].
I am having problems with getting hot air inside either side. After you have drove it and warmed it up you still have no heat. If you shut it off and let it sit for awhile the heat will work. Thats why I think its the termostat. Do you think I might be right?
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Monday, January 13th, 2020 AT 6:31 PM (Merged)
Tiny
RHALL77
  • MECHANIC
  • 3,361 POSTS
How is the coolant level first? Make sure you dont have anyother leaks before replacing the thermostat.
The thermostat is located under the throttle body. They can be a pain to get to.
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Monday, January 13th, 2020 AT 6:31 PM (Merged)
Tiny
WINDOWMAN_95
  • MEMBER
  • 2 POSTS
The coolant level is full in both the rad and tank. I haven't found any leaks yet either. Could it be air in the system, and not the thermostat?
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Monday, January 13th, 2020 AT 6:31 PM (Merged)
Tiny
RHALL77
  • MECHANIC
  • 3,361 POSTS
Very well could be air thats why I asked if you seen any leaks or if it is low on coolant. If you dont see any, then I would replace the thermostat
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Monday, January 13th, 2020 AT 6:31 PM (Merged)
Tiny
BO56
  • MEMBER
  • 1 POST
  • 2005 CHEVROLET IMPALA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 67,000 MILES
I have no heat on driver side and no defrost, but I have heat on the passenger side, what could the problem be?

The blower works on #5 1 thru 4 blower does not work
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Monday, January 13th, 2020 AT 6:31 PM (Merged)
Tiny
LEGITIMATE007
  • MECHANIC
  • 5,121 POSTS
Sounds like the mixing doors are stuck closed. Is there a hissing noise that you can hear? Or clicking noise.
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Monday, January 13th, 2020 AT 6:31 PM (Merged)
Tiny
DCOUCH
  • MEMBER
  • 1 POST
  • 2005 CHEVROLET IMPALA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 50,000 MILES
My heater blows cold air? What are some things I can do to troubleshoot this?
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Monday, January 13th, 2020 AT 6:31 PM (Merged)
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
With the engine at full operating temp, locate the 2 heater hoses where they go into the firewall and feel them to see if they are both too hot to hold. If they are.

The heat in that vehicle is controlled by a blend door that regulates heated air flow. It is operated by an electric motor/actuator. The problem can be that the actuator is stripped or inoperative or the door itself could be damaged. This is what needs to be determined by examining the actuator and see if it is responding to heat change commands or not.
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Monday, January 13th, 2020 AT 6:31 PM (Merged)

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