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Heater problems

Tiny
SMOKE8310
  • MEMBER
  • 1997 GMC C1500
  • V6
  • 2WD
  • 170,000 MILES
My heater stopped blowing heat out but once the truck heats up and I get going down the road doing 50mph pluse it pushes heat threw my vents like I had it set on low you can hear it switch from low to high but nothing comes threw the vents is it my blower motor
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Wednesday, February 17th, 2016 AT 6:31 AM

12 Replies

Tiny
JOHNNYT73
  • MECHANIC
  • 924 POSTS
So, your blower motor is not blowing any air through the vents. Does it blow when on high or not at all?
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Wednesday, February 17th, 2016 AT 7:18 AM
Tiny
SMOKE8310
  • MEMBER
  • 12 POSTS
Blower does not blow
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Wednesday, February 17th, 2016 AT 7:19 AM
Tiny
SMOKE8310
  • MEMBER
  • 12 POSTS
Dont blow on any setting
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Wednesday, February 17th, 2016 AT 7:20 AM
Tiny
JOHNNYT73
  • MECHANIC
  • 924 POSTS
Ok, first check your fuses and that you have power on both sides of the fuses.
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Wednesday, February 17th, 2016 AT 7:20 AM
Tiny
SMOKE8310
  • MEMBER
  • 12 POSTS
I hear it clicking when I switch my heat from low to high down by the blower already checked the fuses and power
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Wednesday, February 17th, 2016 AT 7:22 AM
Tiny
JOHNNYT73
  • MECHANIC
  • 924 POSTS
Ok, then most likely it is the blower motor. I would replace the resistor and blower motor.
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Wednesday, February 17th, 2016 AT 7:25 AM
Tiny
SMOKE8310
  • MEMBER
  • 12 POSTS
In the off chance it's not that what else could it be
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Wednesday, February 17th, 2016 AT 7:29 AM
Tiny
JOHNNYT73
  • MECHANIC
  • 924 POSTS
The only other thing I can think of would be the HVAC control head
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Wednesday, February 17th, 2016 AT 7:30 AM
Tiny
SMOKE8310
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  • 12 POSTS
Where is that located
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Wednesday, February 17th, 2016 AT 7:31 AM
Tiny
JOHNNYT73
  • MECHANIC
  • 924 POSTS
Thats what the unit is called on your dash with your buttons and such on it to control your HVAC
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Wednesday, February 17th, 2016 AT 7:32 AM
Tiny
SMOKE8310
  • MEMBER
  • 12 POSTS
Ok it's working so I will change the blower and resister thank you for your time you've been a huge help
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Wednesday, February 17th, 2016 AT 7:35 AM
Tiny
JOHNNYT73
  • MECHANIC
  • 924 POSTS
Your very welcome.
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Wednesday, February 17th, 2016 AT 8:06 AM

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