2001 Chevy Blazer no heat

Tiny
BARB SMART
  • MEMBER
  • 2001 CHEVROLET BLAZER
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 11,100 MILES
My blazer has no heat. We have replaced the thermostat, flushed the heater core and recently replaced the intake manifold gasket. The blowers are working fine, could this be a problem with the vacum lines, if so, where are those located?
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Monday, December 22nd, 2008 AT 6:20 AM

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Tiny
RHALL77
  • MEMBER
See if your blend door is working ok first. You may have a vaccum line disconnect by the engine. If not try to back flush the heater core and make sure it is not plugged. I know you said you did flush it, but did you back flush it. Some times you have to do a super flush on the heater core to clean it out. Prestone makes a flushing kit that works great for this
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Monday, December 22nd, 2008 AT 5:26 PM

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