may be your heater control valve
it's on the outside on the passenger side.near the heater core hoses.
Where is the heater control valve on a 1994 Buick Regal
should be on the passenger side right along the fire wall
Under dash, passenger side, inside the vehicle, mounted on the firewall.
How to fix heater in Buick there is cool air ,fan is work .but no warm air
Should be at the firewall on the passenger side
Could be a bad thermostat or heater core
The blower switch is the knob you turn on the heater control in the dashboard. If you are talking about the blower motor resistor, it is located in the passenger's foot well area, mounted in the heater box.
the pcv should be near the front valve cover
On the side of the dashboard on the Passenger side.
At the rear of the motor, on the passenger side.
Isn't a heater supposed to blow warm air?