Cabin Temp Control problems
 

Hi folks. I changed out the two plastic heater bypass elbows on my 2001 Park Ave engine (GM 3800) due to a coolant leak. That fixed the leak, but now, there is nothing but hot air blowing out on the driver's side of the cabin. Cool air from the A/C still blows to the passenger side as normal, but on the driver's side nothing but very hot air. Any ideas?