2000 379. The cab blower motor will only work on #1 speed if the AC or defrost is on. 2,3 and 4 work fine. I'm stumped.
Cab blower motor only works with AC on
Discussion in 'Peterbilt Forum' started by kwforage, Mar 8, 2024.
Discussion in 'Peterbilt Forum' started by kwforage, Mar 8, 2024.