On my 1999 Suburban, (5.7), the heater won't heat. I tried starting it up now to see if the heat would come on, and the engine temp. gauge shot up.
I think that its the thermostat, but could that also cause the heater not to work?
btw: I installed a new heater core in November of last year.
I think that its the thermostat, but could that also cause the heater not to work?
btw: I installed a new heater core in November of last year.