I have a 2003 Siera pick up truck ans the heater is blowing out cool air and it only comes out the top not the vents what is my problem, I flush the radiator and put fresh anti-freeze and water in it

Asked by Dec 29, 2015 at 08:33 AM

Question type: Maintenance & Repair

2003 GMC Sierra pick-up truck 2500 v8 4×4 heayer
just blows out cool air

3 Answers

I tried flushing the radiator out and puting fresh anti-freeze and water in it

I put a heater control swicth in it and replaced the recister in it

72,205

Either needs a thermostat, or the cooling system needs to be purged from air pockets, and or the blend door actuator is not working to allow the blend door to close to the outside air.

Your Answer

Add photo

Related Questions

Shortcuts

Search Maintenance & Repair Questions

Maintenance & Repair Experts

#1 Tom Demyan
Tom Demyan
Reputation 174,690
#2 dandyoun
dandyoun
Reputation 93,430
#3 tennisshoes
tennisshoes
Reputation 75,970
View All

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.