Sunroof Module Reset Procedure

Sunroof control modules for both new 2007 model year and for previous model years have been returned to supplier and determined to show "No Fault Found". Complaint condition in all cases has been that the sunroof does not open to the pre-set position commanded by the sunroof control.

Tests have confirmed that no fault exists within the module and the complaint condition could possibly have been corrected by resetting and recalibrating the control module.

The procedure differs for 07 model year from the previous model years (2003 through 2006). However, the procedure for 2007 model year has not yet been published in Service Information

When investigating instances of a sunroof not opening or closing to the position as commanded by the sunroof controls, reset and recalibrate as shown on Attachments 1 and 2. Do not replace the module unless failure is confirmed following resetting and recalibration. The reset and calibration procedure for 2007 model year is shown as attachment 1 and attachment 2 covering previous model years amends the instruction as shown in SIP by adding a step to remove the sunroof fuse before carrying out the reset and calibration procedure.

Important: Use default LTG information, pending release of a revised labor operation.

For vehicles repaired under warranty, use:

If the sunroof loses its calibration (such as some of its functions or positions during operation, transportation or assembly), the following initialization procedure needs to be performed:

1. Remove the sunroof fuse (fuse 17- cabin fuse block). Wait ten seconds and replace the fuse.
2. Set the dial switch to the "initialization" position by turning it fully counterclockwise to the full "tilt"‘ setting.
3. Press the dial switch in for a minimum of five seconds to begin the initialization process. Hold the switch pressed through Step 4.
4. The sunroof will move step by step to the hard stop-close position and return to the soft stop-close position.
5. Release the switch and press again within two seconds. Hold again for five seconds before the "Teach-Run Calibration" process begins. The sunroof will slide open and then close. Continue to hold the switch pressed until 2-3 seconds after the sunroof closes.
6. This concludes the Initialization and calibration process. The sunroof should now respond correctly to commands from the sunroof switch.

The procedure below has been copied from Chevrolet SIP.

Before beginning this procedure, remove the sunroof fusible link fuse number 3 Cabin fuses and relays board for approximately ten seconds and replace.

The SCU must be calibrated using the soft touch function. Refer to 1.2 Sunroof Function as follows:

1. Turn the ignition to the ACC or ON position.



2. Open the sunroof to the maximum tilt position (until it reaches the mechanical block) by continuously pressing the sunroof switch (1) down arrow button.

Important: The maximum tilt position is now stored in the SCU memory and all the electrical functions are now available.

3. Close the sunroof by briefly pressing the sunroof switch "C" button.
4. To complete the calibration, the sunroof must be fully opened in the slide mode (until it reaches the mechanical block) by continuously pressing the sunroof switch up arrow button.
5. Check that the sunroof operates correctly. Refer to 1.2 Sunroof Functions.