my heater works on the passenger side but it just blows cold air out the drivers side..is it in the dash?
heater??????? on 1999 Cadillac Catera
I had that problem, but it was blowing cold air on the passenger side. It was an actuator which is up under the dash up by the bottom of the windshield in the center.
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You would have to follow trouble shooting procedures. I am not very familiar with Cadillac, one I did work on had a faulty actuator, not allowing a flap to open. Autozone have some popular workshop manuals for free on line once you register (for free) on their website http://bit.ly/autozone_repair_info. There is a company that independent auto repair shops get their information from, this same information is available inexpensively for people that work on their own cars.. The information is year make and model specific, covering repair procedures, torque specifications, fluid capacities and specifications, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate http://bit.ly/AllData_Repair_Manuals_Online