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?
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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
  • 109,758 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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