2001 GMC Truck No Heat

2001 GMC TRUCK
80,000 MILES • V8 • 4WD • AUTOMATIC
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GLENN2U
  • MEMBER
  • 2 POSTS
Heater will not get hot. One of the heater hoses is hot, but the other one is cold. what seems to be my problem?
Dec 18, 2009 at 9:05 AM
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JDL
  • ✓ASE Certified Mechanic
  • 16,098 POSTS
  • ASE Certified Mechanic
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.
Dec 18, 2009 at 9:26 AM
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