2002 GMC Sierra blower blows cold air

NATE10

MEMBER
2002 GMC SIERRA
V8
2WD
AUTOMATIC
70,000 MILES

Do I change the thermostat?

Thursday, January 28th, 2010 AT 9:24 AM

1 Reply

TOOOMANYTOYS

MECHANIC
513 POSTS

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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