Question about 2000 GMC Jimmy

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Repair sunroof that will not open

Motor for sunroof works but will not open or close sunroof, there is only a loud claking noise.

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Sorry but that generally means a gear is stripped. The whole actuator assembly will have to be replaced.

Posted on Jul 19, 2010

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Posted on Jan 02, 2017

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Sunroof does not open. Fuse is ok and the shade operates normally.


Do you know how to do automotive electrical testing ?????? How to read a wiring diagrams ???? http://www.bbbind.com/free_tsb.html .Videos on youtube Ohms Law Tech Tip from L1 with Dave Hobbs Copy of Voltage Drop Essentials TST Motor Age The only way to find the problem , testing !

Sunroof Description and Operation (One Connector System)
Sunroof
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:
• Open
• Vent
• Closed
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 .

Feb 10, 2017 | 2010 Buick LaCrosse CXS

1 Answer

How can I manually close the sunroof on my Lincoln MKX?


Put the switch in the first detent for manual open/close

Mar 11, 2013 | Cars & Trucks

1 Answer

Hummer h3 sunroof not working


try to apply light pressure to the sunroof while pressing the open switch, see if it opens, if it dose then grease the tracks if not, the motor may be burnt out.

May 14, 2012 | 2006 Hummer H3

1 Answer

How to set powered sunroof open / close limits?


These limits are not adjustable.

Feb 21, 2012 | Cars & Trucks

1 Answer

Honda CRV-2001 MODEL SUN ROOF WILL NOT OPEN OR CLOSE. Sun roof motor OK, but loud clicking noise evident when power button is operated. Sun Roof stuck in closed position.


caution if it opens you may not be able to close it again, this sounds like the track broke or something in the motor. lets hope its the motor as if its the track then the whole track needs to be replaced, there is no repairing a broken sunroof track.

Aug 17, 2011 | 2001 Honda CR-V

1 Answer

The sunroof in my 99 bonneville is making a loud noise when i open or close it almost sounds like the motor may be going bad or gears are stripped and i know nothing about sunroofs can you help ?!?


The sunroof motor is located under the roof liner above the center of the rear seat. You will need to remove the headliner in order to access the motor and or track. Do you feel you're mechanically inclind to remove all electrical, sunvisors, side roof handles side trim etc. If not than repairing the motor or track maybe beyond your scope of work. If you are let us know and once done you can proceed to the next step.

Apr 12, 2010 | 1999 Pontiac Bonneville

1 Answer

Sunroof makes noise


a sign of worn motor or gears, track loose it lubrications over years gear work harder, heat weaken plastic gears and tend to fail, common problems to all sunroof, beside getting it repair you can try to to put a little of grease on the track and open and close the sunroff cuple of time that may help some. sunroof it fairly complicated on all vechicle to fix and expensive.

Sep 08, 2009 | 2001 Mazda Tribute

1 Answer

Sunroof stuck


First off, you should leave it closed. At least you can drive it that way. The grinding could be the motor itself, or a gear inside that has rounded or broken teeth. Another possibility is that it has slipped out of a channel or track. Unless you're pretty handy this sounds like a professional repair job.

Jul 07, 2009 | 2005 Dodge Neon

1 Answer

MY 2001 subaru forester sunroof is not closing completely


does the sunshade open and close properly,you should only be able to move this when the sunroof is closed it should move freely back and forth,if it doesn't this part is causing the noise, its off its track

Jul 05, 2009 | 2001 Subaru Forester

1 Answer

1999 Oldsmobile Bravada I opened the electric sunroof and it went back farther than normal and made a loud clicking noise then when I tried to close it it will only go 1/4 of the way closed and stop I can...


welcome to the club.

i am going to give you the link to my oldsmobile aurora sunroof repair write up. it will explain what has happened to your sunroof and how to fix it.

the oldsmobile aurora and the bravada use the same exact sunroof

http://aurorah.proboards.com/index.cgi?action=display&board=1stgen&thread=16095

Apr 12, 2009 | Oldsmobile Bravada Cars & Trucks

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