2001 chevy 2500 hd lost my cab heat
 

any known issues that would make us loose heat in the cab? blending door??? how tough on the repair.

THanks,
David

Re: 2001 chevy 2500 hd lost my cab heat
 

Check water level.
Check for BOTH heater hoses getting HOT at normal temp.

Re: 2001 chevy 2500 hd lost my cab heat
 

water level good both heater hoses hot

Re: 2001 chevy 2500 hd lost my cab heat
 

Are you sure they're hot and not warm? It's faily common for the heater core to get clogged. I back flushed mine last year and a turd of stuff came out. It's common when you don't change the dexcool every 5yrs/100K (I didn't either...)

Re: 2001 chevy 2500 hd lost my cab heat
 

Did you check the fuse box to see if you have a blown fuse. Was in a 03 chevy truck where this happened and turned out to be a fuse.

Re: 2001 chevy 2500 hd lost my cab heat
 

Check to make sure the temp door actuator is working. Common issue for the actuators to go bad in these trucks.