1994 GMC Jimmy "truck heater heating" Questions

truck,a 1998 GMC diesel after checking to make sure the control cables were operating the blend door and blowing the mess of the heater core,I replace the thermostats.Still no heat turns out there was

heater dose not give any heat I turn on the heater and there is no heat. I had heat just the other day and no heat today. What could be the problem Try checking the fluids if not that replace the ...

My heat in my 1992 gmc jimmy barely comes out and barely any heat. My car barely heats up in the winter as it is. And i have checked the water levels and everything. So i was wondering could the ...

Locating Heater core on 2000 GMC jimmy no heat during idle. But once motor heats up after driving for several minutes a little heat will come out but then go away heater core is cloged suggest ...

The heater only blows cold air,the radiator is full,thermastat is working and the engine temp is within normal ranges. I've had this problem. 2000 GMC uses a closed coolant system. Meaning takes and ...

2000 Jimmy Heater My heater will only shift between defrost and dashboard outlets. It will not go to the floor outlet. The shift lever where you adjust where the heat needs to go may be the problem. ...

NO HEAT fan blows great, a/c works great, only cool air comes out when heater is on, will not heat up at all. No smells, just clean cool air. tried recycled air sna outside air same results. PLEASE ...

No heat. Changed thermostat still no heat. Plenty of fluid, heater hoses are warm. Please help check blend door in heater compartment

no heat comming out of fan I have no heat comming out of the vents . I have replaced the temper gage themous stat , flushed the radiator out . What else could it be? These are well known for clogged ...

1997Gmc jimmy Heater not blowing air out. I can feel the heat but will not blow on low-high? I had the same problem no heat when all else fails check your water pump! It caused my heater not to work!