GM Service Manual Online
For 1990-2009 cars only

In order to control the moving sequence of the folding top system, the folding top control (FTC) module uses the upper and lower limits of the position sensors as well as the current known position. Learn the sensors using the following procedure if the system has been repaired or components have been replaced.

Complete the window normalization and folding top position procedures prior to performing the folding top learn procedure.

    • Window Normalization: The driver and passenger windows must be normalized. Using the scan tool, observe the parameter for the Window Normalization for both the driver door module (DDM) and the passenger door module (PDM). If the windows are not normalized, perform the Power Window Reinitialization .
    • Folding Top Position: The folding top system will need to be in the fully closed or open position, refer to Folding Top Manual Operation . If the folding top system is in the open position and the header latch is unlatched, access the header latch by manually moving the folding top to the closed position. Use the scan tool to verify the status of the Header Latch Limit Switches.

Folding Top Learn Procedure

Using the scan tool, navigate to Vehicle Control Systems, Computer Integrating Systems, Module Replacement/Setup, then select FTC. From this menu, select Folding Top Learn Procedure.

Follow the steps below:

  1. Manually move and secure the folding top either in the open or closed position. Refer to Folding Top Manual Operation .
  2. Verify that the bypass valve at the pump motor is in the operating position by turning the valve clockwise.
  3. Verify that the cargo cover is in place.
  4. Close the decklid and confirm that the top is in either the open or the closed position.
  5. Verify that the valet switch, located inside the instrument panel (I/P) compartment, is in the OFF position.
  6. Place vehicle in PARK.
  7. Turn the ignition to the RUN position.
  8. Press the Learn soft key on the scan tool to start the learn procedure.
  9. Press and hold the folding top control switch until the top has completed the open or close cycle.
  10. Press and hold the folding top control switch in the opposite direction until the top has completed that cycle.

If any of the sensor parameters indicate Not Learned, repeat the folding top learn procedure. Verify that the learn procedure has been completed successfully by operating the folding top. Refer to Power Folding Top Description and Operation .