I DONT HAVE NO HEAT! CHANGE THERMOSTAT AND ...

1999 GMC Yukon

Tiny

Anonymous

February, 2, 2013 AT 8:24 PM

I don't have no heat! Change thermostat and heater core it blows cool air when on

FOUND 1869 RELATED QUESTIONS

2 Answers

Tiny

merlin2021

February, 2, 2013 AT 8:29 PM

Can be the heat control valve, if it has one, or the temperature blend door actuator on the plenum.

Tiny

merlin2021

February, 2, 2013 AT 8:29 PM

Do both heater hoses get hot?

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