About Van Expertise I can answer most questions concerning 4X4 engine, drive line, suspension, electrical, and fuel, both diesel and gasoline. Ford, GM, and Dodge, old and new.
Experience I have been maintaining a fleet of approximately 55 light, medium and heavy vehicles for over 20 years. Most are 4X4 pickups and off road fire fighting trucks.
Question Van
I have a 1988 chevy k2500 pickup w/air, 350 v8. It has the electronic type heater control,(buttons only,) It sometimes doesn't change from floor to vent or floor to defrost, will stay at the dash vents. The display shows it changing but the change is not actually made . There are no cables or anything, I think it is done with vacuum. ? Thanks Jim
Answer Hello Jim,
Actually, the changes are made with little electric motors.
The one that makes that change is right beside the gas pedal, on the end of the heater housing.
That one controls three doors, and has a couple links on the outside of the box that you should be able to see moving as you switch selections.
It is possible for the doors to get stuck, but look and see if that motor is moving anything.
Van
