No heat
Asked by Fireman1224 Jan 23, 2016 at 08:10 AM about the 1999 GMC Sierra 1500 SLT 4WD Extended Cab SB
Question type: Maintenance & Repair
Hvac works, but no heat is generated. Any thoughts?
2 Answers
firebird338 answered 8 years ago
Low on anti freeze, thermostat needs to be replaced, radiator fan not working, blend door is not switching over from A.C to heat, this is just a few things but a little bit more information on what is going on would be helpful to diagnosis better.
HunterTaylor answered 8 years ago
Also in front of the engine where the grille is you may have a bad inter cooler. Best thing would be to put a piece of cardboard behind the the grille so the the engine doesn't blow cold air into your cat