2001 GMC Truck No Heat

Tiny
GLENN2U
  • MEMBER
  • 2001 GMC TRUCK
  • V8
  • 4WD
  • AUTOMATIC
  • 80,000 MILES
Heater will not get hot. One of the heater hoses is hot, but the other one is cold. What seems to be my problem?
Friday, December 18th, 2009 AT 9:05 AM

1 Reply

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Welcome to the forum, sounds like no flow through the heater core, for some reason. If there is a valve that contols flow through the heater core, check that. The heater core maybe clogged-up, you can try to flush it.
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Friday, December 18th, 2009 AT 9:26 AM

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