1994 Chevrolet Suburban Repair Question
Chevrolet Suburban Engine Problem
Good place to start change out thermostat
18,430 answers provided
You need to have some idea what is going on before you start throwing parts at it. It sounds like you are assuming engine temp but have not confirmed anything.
With the engine at full operating temp, locate the 2 heater hoses where they go into the firewall and feel them to see if they are both hot to the touch. If only one is hot, the heater core may be plugged. f neither is hot, the engine temp may be low. If they are both hot, the heat in that vehicle is controlled by a blend door that regulates heated air flow. it is operated by an electric motor/actuator. The problem can be that the actuator is stripped or inoperative or the door itself could be damaged. This is what needs to be determined by examining the actuator and see if it is responding to heat change commands or not.
14,734 answers provided
hopefully that will fix the problem, but i wondr, what else i should do if it is not the thermostat??
17 questions asked