flap actuator heater a/c

  1. Davidson Mott

    No Heat at Idle/Heat Only at Acceleration.

    I'm trying to hunt down an issue I'm having with no heat at idle or yet alone just cruising on my 2000 GMC Yukon Denali. About the only time I get heat is when I'm either accelerating or when the engine is under additional load. It was doing it before I changed the heater core and still doing it...
  2. Andrew7

    Noisy interior a/c heater controls

    My 93 C3500 454 Dually has weird noises coming from under the dashboard. They seem to get louder when accelerating. I have disconnected one flap actuator for noise already due to a clicking noise when you turn it off.
Top