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Sunroof Description and Operation (One Connector System)
This diagnostic procedure is to be used for the 1 connector Sunroof System that combines the sunroof control module with the sunroof motor/actuator.
The Sunroof System consists of the following components:
• BATT MAIN 2 Fuse 50 A
• Body control module (BCM)
• RAP relay
• S/Roof Fuse 20 A
• Sunroof module (includes sunroof motor/actuator)
• Sunroof switch
The Sunroof System is controlled by the sunroof switch and the sunroof motor/actuator assembly.
When the ignition is turned to RUN or ACCESSORY, or when the retained accessory power (RAP) system is active, the body control module (BCM) applies a ground to the RAP relay in the instrument panel (I/P) fuse block. This activates the RAP relay and allows battery positive voltage to be applied through the SUNROOF Fuse to the sunroof module. Ground for the sunroof module is supplied from G302.
The sunroof can be placed in 3 preset positions:
When the sunroof switch is placed in the OPEN position, a ground is applied from the sunroof switch low reference circuit , through the sunroof switch and to the sunroof switch open signal circuit. The sunroof motor/actuator then applies voltage to the sunroof motor open control circuit and applies a ground to the sunroof motor close circuit. The sunroof motor then opens the sunroof to the full open position.
When the sunroof switch is placed in the VENT position, a ground is applied from the sunroof switch low reference circuit , through the sunroof switch and to the sunroof switch open signal circuit. The sunroof module then applies voltage to the sunroof motor open control circuit and applies a ground to the sunroof motor close circuit. The sunroof motor then opens the sunroof to the VENT position.
When the sunroof switch is placed and held in the CLOSED position, a ground is applied from the sunroof switch low reference circuit , through the sunroof switch and to the sunroof switch close signal circuit. The sunroof module then applies voltage to the sunroof motor close control circuit and applies a ground to the sunroof motor open circuit. The sunroof motor then closes the sunroof.
The sunroof can be placed in any preferred open position when:
• The sunroof is in the fully opened position by pressing and holding the sunroof switch in the CLOSE position until the panel has reached the desired position then release the CLOSE switch in order to stop the sunroof
• The sunroof is opening, it can be stopped by momentarily pressing either side of the switch.
The sunroof control module, sun roof actuator, and the sunroof motor are integral parts of the sunroof module assembly and are not service separately.
Your best bet , take it to a qualified repair shop or buick dealer .
Sounds like the timing is out. Pull the headliner down enough so that you can get to the motor. Close the sunroof and allow it to stop where it wants to. Then remove the bolts holding the motor on, pull the motor out of the way of the gears and push the sunroof closed. Then remount the motor. It should work correctly after that.
sounds like the metal deflector in front of the sunroof,is separated and caught in the roof mechanism, however there are other issues that can cause that condition, it can be anything from a bad sunroof switch to the sunroof tracks jamming, start with looking to see if there any obstuctions in the track..the sunroof mechanism can get costly to repair.
I think I know the answer....your gear has slipped on the cable a few teeth. Set the roof to the desired closed position, flush with your roof. Then open the panel above the mirror by first prying off the switch plate and removing the two 10mm bolts holding the mirror. Remove the sunroof motor gear, or rather just lower it out so it is disengaged with the cables. Now connect the switch and hit the auto open button as if you wanted to open the roof with single flick of the switch. Now hit the auto close button (same button of course, but the single touch method). The motor will advance and stop to where it thinks the roof should be, closed, which it is. Reassemble the gear into the slot, test it if all good, replace the mirror and panel.
You can try cleaning and lubricating the runners. The sunroof will open as soon as it is obstructed, eg. A childs arm in the way of closing. The problem here is that you can hear the motor running, wich indicates a broken cable, or a stripped plastic gear.
There should be a rubber lining around the sunroof. That might need to be replaced, if not pull it almost completly off (dont pull it off all the way because its not fun to realign). Go to Lowes and pick up some clear sefl squeeze bathroom caulk and inject it inside the rubber fold.Then reapply. This actually worked on my buddies sunroof.
hi sounds like a faulty sunroof relay keeping the motor running it may well have blown the fuse or burned the motor out if you connected it back up and it doesn,t work at all but should be able to turn the sunroof back manually look on the sunroof motor there should be sometthing like a slot for a large screwdriver or a bolt head of sorts just wind it back and then check the relays and fuses if your switch is a electronic one make a make shift one and try [simple switch]on and off as this is delicate circiutery and the slightest short can destroy it best of luck yates210456