2010 GMC Sierra 4.8L

By Eloy Chavez Jr.
January 28, 2020 in 1999-2013 Silverado 1500 & Sierra 1500

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Eloy Chavez Jr.

Posted January 28, 2020

OK my truck here recently, was overheating so I decided to change the thermostat as precaution now that I changed it. It is overheating and is not blowing out hot air any suggestions

Colossus

Posted January 28, 2020

Sounds like a plugged up line somewhere. Maybe plugged up radiator. Maybe plugged up heater core.. Best to take it in and have it diagnosed.

rjgti

Posted January 29, 2020

air lock, bleed cooling system

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