Check the temeratur blend door, and actuator for it.
Sometimes the shaft rusts and wont turn, other times the actuator, or vacuum servo goes bad. Also if it has a heat control valve, it will be on inlet heater hose, the valve can go bad or the vacuum line to it leaks. It would help if I knew what model Bonneville this is and if it has auto or manual a/c?
Saturday, October 10th, 2009 AT 10:08 AM