Need Help

[c5andtyphoon]

i have a 99 c5.. they heat just quit working on the passenger side and the defroster the only heat that works is on the drivers side and the middle vent. i have the dual zone climate control.. does anyone know of an easy or cheap fix?.. please inform me thank you

[Band1t]

You might check to see if your throwing any codes, like B0361, B0363, B0365 or B0367. It sounds like the RH actuator might be stuck or binding. You can try to pull the HVAC fuse 27 while the car is idling, to reset the actuators LH/RH.

TJ

[Stu]

Find the vaccum line from behind the intake manifold and see if it is still connected. It should run to the passengers side and to the footwell to a distribution block. Check those. My leaking battery ate thru the main line and all I had was defrost.