AC and Heater not working

Tiny
MONSTER79
  • MEMBER
  • 1995 CHEVROLET TRUCK
  • 5.8L
  • V8
  • 4WD
  • AUTOMATIC
  • 204,000 MILES
I bought a new control panel because we thought that was the problem. Installed it and nothing works or makes noises. The two wires are getting juice no blown fuses.
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Wednesday, November 2nd, 2016 AT 5:54 PM

16 Replies

Tiny
HMAC300
  • EXPERT
If you have the old panel put that back in as the new one has to be programmed to your truck. Check to see if your temperature actuator is getting power or not. See pictures. Also, pull fuse with arrow for sixty seconds with key on. It may reset and give you heat. Finally if actuator is bad do not plug it in until it is installed as it may not work and you will have to do a reset again.
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Thursday, November 3rd, 2016 AT 6:18 AM
Tiny
MONSTER79
  • MEMBER
Where is that fuse located?
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Thursday, November 3rd, 2016 AT 6:44 AM
Tiny
HMAC300
  • EXPERT
Look at the picture carefully it tells you what box it is in, the one inside the truck.
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Thursday, November 3rd, 2016 AT 7:25 AM
Tiny
MONSTER79
  • MEMBER
Do you have to remove the dash to get to it?
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Thursday, November 3rd, 2016 AT 8:23 AM
Tiny
HMAC300
  • EXPERT
It is behind a cover to the left of the steering column. If you cannot find it have a local mechanic or auto parts look for it.
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Thursday, November 3rd, 2016 AT 9:25 AM
Tiny
MONSTER79
  • MEMBER
Underneath the dash or do you remove the gauge cluster?
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Thursday, November 3rd, 2016 AT 9:43 AM
Tiny
HMAC300
  • EXPERT
Please re read my last reply. It has a cover that has to be taken off or go to a mechanic so they can show you. We have no pictures of this otherwise I would have sent it.
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Thursday, November 3rd, 2016 AT 11:57 AM
Tiny
MONSTER79
  • MEMBER
I found something yesterday. I used a light tester and tested the two wire plugins. One plug in would light up like a dream, the other one would not show hardly any light.
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Friday, November 4th, 2016 AT 6:16 AM
Tiny
MONSTER79
  • MEMBER
I also found that the actuators are not getting power
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Friday, November 4th, 2016 AT 6:37 AM
Tiny
HMAC300
  • EXPERT
Hopefully you tested the fuse with the key on. Now do as I said in the one reply to pull fuse for htr/ac for 60 seconds with key on then reinstall car can be running if you like it doesn't matter. Then see if you get heat if not then a mechanic has to scan for codes to see if it is the control head. I am assuming you put the old control back in if not the new one will need to be programmed to your vehicle to get power to actuator.
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Friday, November 4th, 2016 AT 7:02 AM
Tiny
MONSTER79
  • MEMBER
Is this were the fuse is.
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Friday, November 4th, 2016 AT 7:09 AM
Tiny
HMAC300
  • EXPERT
Yes if we had a picture I would have shown it long ago it's a 25 amp fuse.
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Friday, November 4th, 2016 AT 8:02 AM
Tiny
MONSTER79
  • MEMBER
What does it mean when the one wire set is not getting enough juice?
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Friday, November 4th, 2016 AT 8:37 AM
Tiny
HMAC300
  • EXPERT
One wire is getting juice and other is a ground so will not have any juice from your description the actuator is bad
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Friday, November 4th, 2016 AT 9:31 AM
Tiny
MONSTER79
  • MEMBER
What one would it be for the actuator?
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Friday, November 4th, 2016 AT 9:41 AM
Tiny
HMAC300
  • EXPERT
I've sent that info to you previously these pics should show you everything you need if not see a mechanic
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Friday, November 4th, 2016 AT 12:18 PM

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