Heat trouble

Tiny
ANTHONY DIAL
  • MEMBER
  • 2000 CHEVROLET TAHOE
  • 4WD
  • AUTOMATIC
  • 101,000 MILES
I am having trouble with the heat in my 2000 Chevrolet Tahoe. The heat in the front starts out warm for like 5 seconds and then it turns completely cold but the heat in the back works perfectly fine. Any suggestions on what it could be and how to fix it?
Sunday, December 19th, 2010 AT 5:12 PM

2 Replies

Tiny
NORTH POLEAN
  • MEMBER
  • 3 POSTS
I dont have rear a/c, heat but there has to be a heater control valve on the line going to this rear heater core just like the front, that turns the water off when you want to use the a/c. Vacumn operated.
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Sunday, January 23rd, 2011 AT 10:33 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
With the engine hot, running, and the front heat on, feel both heater core hoses. If both are hot, check the blend door. If only one get / stays hot, try flushing the heater core.
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Thursday, March 17th, 2011 AT 4:31 PM

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