1999 Regal LS driver's side blowing cold, passenger side blowing hot

1
0
1
Buick Ownership
1999 Buick Regal LS
The driver's side blows cold air, and the passenger side blows hot, regardless of settings. There also seems to be no difference in air output regardless of settings.
Also can't seem to find where cabin air temperature sensors are located (or how many there are). I have replaced the outside air temperature sensor since it was giving an invalid reading.
Ideas?
 

richardnewton

Junior Member
51
8
8
Buick Ownership
Buick
Had same problem on 2001 Regal LS (no digital climate control, just manual vertical sliders on dash for temp control, one for passenger one for driver).

Pulled blend door actuator and inspected door. No issues. That is a popular solution.

On my Regal, refrigerant was low. Tried DIY can but that didn't work. Had garage do professional drain & recharge last year and has worked perfectly since.
 
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