Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum banner

no heat

  1. OEM Issues
    I am trying to diagnose a really stubborn heat problem on my 06 Trailblazer. There's no heat at all, ever. Took it to shop, who kept it for a week while I was out of town. First they said the core was blocked, but they say they flushed it out. They say that that both hoses are warm (I...