shadow_man
New Member
So...I go out today to start my '00 burb. Had the heat up. Let it idle 10 minutes & come out to it barely warm up front & blowing cold in the back. I checked under the hood. I checked coolant level was up to level & both heater hose inlet & outlet were both hot. The blower is hood & all controls tested good. I back flushed the system, not to much garbage came out. I did this 3-4x the blend door isn't stuck, and I tested the rear module for the rear control. No vacume leaks either. I don't want to replace the core because i did it 2 years ago & I know its still good. I changed the thermostat at the same time as the core replacement. Could it be the stat or am I missing something? If it was just me driving I would suffer through, but its my wife and kids in it mostly. 2 & 4 years old. Any advice?
