Hello
First lets check all the under hood vacuum connections, if you do not have a good vacuum supply to the system the actuators will not switch correctly, If you find that the line at the intake has come off or is loose reinstall and use a small wire tie to hold it in place
DESCRIPTION
Two vacuum check valves are installed in the accessory vacuum supply system. One is on the accessory vacuum supply line in the engine compartment, near the vacuum tap on the engine intake manifold. A second vacuum check valve is located at the HVAC system takeout. The vacuum check valves are designed to allow vacuum to flow in only one direction through the vacuum supply circuits.
The vacuum reservoir is mounted to the rear of the right front inner fender in the engine compartment, under the battery tray.
The vacuum reservoir can be accessed for service by removing the battery and battery tray.
Let me know how you make out with this and if you need additional information and test procedures
Thank you
Donny
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