Heater problems

1997 GMC C1500
170,000 MILES • V6 • 2WD
Avatar
SMOKE8310
  • MEMBER
  • 12 POSTS
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
Feb 17, 2016 at 6:31 AM
Advertisement
Avatar
JOHNNYT73
  • CERTIFIED EXPERT
  • 924 POSTS
So, your blower motor is not blowing any air through the vents. Does it blow when on high or not at all?
Feb 17, 2016 at 7:18 AM
Avatar
SMOKE8310
  • MEMBER
  • 12 POSTS
Blower does not blow
Feb 17, 2016 at 7:19 AM
Advertisement
Avatar
SMOKE8310
  • MEMBER
  • 12 POSTS
Dont blow on any setting
Feb 17, 2016 at 7:20 AM
Avatar
JOHNNYT73
  • CERTIFIED EXPERT
  • 924 POSTS
Ok, first check your fuses and that you have power on both sides of the fuses.
Feb 17, 2016 at 7:20 AM
Avatar
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
Feb 17, 2016 at 7:22 AM
Avatar
JOHNNYT73
  • CERTIFIED EXPERT
  • 924 POSTS
Ok, then most likely it is the blower motor. I would replace the resistor and blower motor.
Feb 17, 2016 at 7:25 AM
Avatar
SMOKE8310
  • MEMBER
  • 12 POSTS
In the off chance it's not that what else could it be
Feb 17, 2016 at 7:29 AM
Avatar
JOHNNYT73
  • CERTIFIED EXPERT
  • 924 POSTS
The only other thing i can think of would be the HVAC control head
Feb 17, 2016 at 7:30 AM
Avatar
SMOKE8310
  • MEMBER
  • 12 POSTS
Where is that located
Feb 17, 2016 at 7:31 AM
Avatar
JOHNNYT73
  • CERTIFIED EXPERT
  • 924 POSTS
thats what the unit is called on your dash with your buttons and such on it to control your HVAC
Feb 17, 2016 at 7:32 AM
Avatar
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
Feb 17, 2016 at 7:35 AM
Avatar
JOHNNYT73
  • CERTIFIED EXPERT
  • 924 POSTS
your very welcome.
Feb 17, 2016 at 8:06 AM