2002 GMC Sierra blower blows cold air

Tiny
NATE10
  • MEMBER
  • 2002 GMC SIERRA
  • V8
  • 2WD
  • AUTOMATIC
  • 70,000 MILES
Do I change the thermostat?
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Thursday, January 28th, 2010 AT 9:24 AM

1 Reply

Tiny
TOOOMANYTOYS
  • MEMBER
When vehicle has been run for awhile what does the temp gauge say around 210? If cooling system is not overcooling. It may have a clogged heater core, or a sticking temperature actuator
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Thursday, January 28th, 2010 AT 9:33 AM

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