macc
LVC Member
I have a 2001 LS I bought in March of 2016. It was still "cold weather" when I got it and the heater blew good and hot when I used the heater. A month ago we had a rather cold day and when I turned on the heater all I got was cold air. The blower works good just no heat. Online I read that it could be the dual coolant flow valve, most mechanics are telling me it's probably the the heater core is plugged. When the engine is warm, the 3 lines that run from the flow valve to the heater core are very warm. Is this dual coolant flow valve also known as the DCCV? I checked the fuse and it's good. I don't want to unneccesarily buy a lot of parts trying to get heat back in the car if I don't have to, but it's getting cold in PA and I need heat. If anyone can give me direction here I would appreciate it, THANKS