Buick Regal
Jeep Grand Cherokee Limited
Heating Ventilating and Air Conditioning

Why would the passenger side heat blow cold air in your 94 Buick Regal?

User Avatar
Wiki User
December 03, 2005 10:05PM

The most common thing is the heater / climate control valve located in the dash area for controlling the heat output. Should be able to tell if using the dual mode changes the heat output.