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1993 GMC C3500 my truck dosent heat

Tiny
METALBAKON
  • MEMBER
  • 1993 GMC C3500
Heater problem
1993 GMC C3500 V8 Four Wheel Drive Automatic

winter is comming up and after freezing last winter I want to be warm. My truck dosent heat up at all after I turn it on. It might start getting a little warm but only after an hour of strait driving. How can I make my heater blast warm air this winter?
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Tuesday, September 29th, 2009 AT 1:47 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Make sure the heater core is not clogged-up and replace the thermostat and see what happens-further could be an air mix/blend/mode/recirc door problems, vacuum and actuators and HVAC control module
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Tuesday, September 29th, 2009 AT 2:23 AM

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