I have a friend that had a 2000 silverado that he uses for a work truck and it has no heat. He said that he replaced the thermostat and the truck still has no heat. I am going to take a look at it for him and try to figure out what the deal is and I am going to bet on a clogged heater core from years of Dex-cool and never being serviced. Any common problems or stuff I should be aware about with this truck?
Clogged heater core
Air pocket
Broken blend door
What else?
Clogged heater core
Air pocket
Broken blend door
What else?