2000 Chevy Blazer no heat

Tiny
CHOPPER21
  • MEMBER
  • 2000 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 100,000 MILES
My 2000 blazer recently developed aheat problem, my heater throws no heat, and I have already put the new thermostat. Blower motor blows great but no heat.
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Monday, March 3rd, 2008 AT 3:53 AM

1 Reply

Tiny
PEAR69
  • MEMBER
Your t-stat is in bachwards or (more likely) the heater core needs to be flushed out. It is common for a heater core to become clogged with junk.
To check the heater core for blockage-get the engine up to temperature. Feel the heater cores two hoses--located in the engine compartment. If the core is NOT blocked the two hoses will be the same temperature--if it is blocked one hose will have a temperature difference.
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Monday, March 3rd, 2008 AT 4:11 AM

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