Just purchased a 03 ZR2 Blazer. I noticed the sunroof is not stopping in the closed position. I searched through the owners manual and could not find one reference to sunroof operation but managed to find some info online. If I push and release the toggle switch to the rear, the roof opens and stops at the halfway position. Will not open all the way. If I push and hold the toggle in the forward position the sunroof will open to the vent position. If I push the toggle to the rear to close the sunroof, the roof will again open to the halfway position. I obviously have an issue going on. The sunroof is not stopping in the closed position at all or opening all the way. Motor sounds good, no clicking and/or binding. Sunroof slides w/out issue. Tracks look fine and nothing appears to be broken. In searching the net, I have found posts concerning re-calibration of the sunroof module and drive motor timing. I don't know how correct this info is. Also found a reference to a GM# 12333707 sunroof module as being faulty. Can these modules be tested at all? Any assistance would be greatly appreciated. Thank you all for your time.
have the same problem?
Thursday, November 19th, 2015 AT 9:58 PM