Heater blows cold air

Tiny
JRBACA
  • MEMBER
  • 2004 CHEVROLET TAHOE
  • 5.3L
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 1,800,000 MILES
First the truck overheated then I topped it off with antifreeze then it did not overheat, but the gauge would drop toward cold temperature and the heater would blow but only cold air.
Wednesday, December 7th, 2016 AT 11:36 AM

2 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
It is probably still low that is number one cause of no heat. Have coolant system pressure checked for head gaskets.
Was this
answer
helpful?
Yes
No
-1
Wednesday, December 7th, 2016 AT 12:10 PM
Tiny
RYAN L
  • ADMIN
  • 256 POSTS
Thank you for using 2CarPros! Here is a great video on what could be wrong with your heater! https://www.youtube.com/watch?v=SNRb6pSwYuU

If you have any further questions please feel free to ask!
Was this
answer
helpful?
Yes
No
Wednesday, December 7th, 2016 AT 3:16 PM

Please login or register to post a reply.

Sponsored links