2000 Sonoma Heater problem

[65gto69]

Hi Guys,

This morning driving into work I needes my defrosters for the front window. I put the defrosters on with a little heat and noticed that with my temp gauge running near 210 degrees (normal) cold air was coming out of the vents. Turned the heat control knob all the way to the hottest setting and you guessed it, still cold air coming out. No anti-freeze smell, passenger floor not wet. What Happened to my heat?

Thanks in advanced,
Mark

[GMCTech]

Most likely your heater core is plugged, you'll have to have it flushed.

Hope this helps.