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Sunroof won't open on 2013 Buick LaCrosse after replacing the battery.

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A control module is used to operate the sunroof an if a alternative power supply isn't used so modules don't lose there memory they can go dead . The only way in most cases to get it working again is a trip to the dealer where they have factory scan tool to communicate with it !
Battery Disconnect or Replacement Problems

Posted on Apr 25, 2017


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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017


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2013 Buick LaCrosse “no remote dectected” car won’t start. Changed battery in remote started .. next day same message and car won’t start.

The best answer is inside your owner's manual Section 2 page 6. I believe you have to program your key fob. The HOW TO is there;

Hope it helps.

Feb 23, 2018 | Buick Cars & Trucks

1 Answer

Open gas cap on 2013 Buick lacrosse

This should be a normal threaded cap and will twist off in a counter clock wise motion. If the cap is not original and has been replaced with a locking type cap, it will require a key to unlock it and the removal procedure will be the same as the original cap

Jan 29, 2016 | 2013 Buick - LaCrosse

1 Answer

How do you open the gas cap

the fuel "hatch" has a press and release catch, press the rearmost part of the hatch then release once it clicks, this will allow you to gain access to the fuelling cap. the cap can be removed by just unscrewing it counter clockwise

posting link, directions on opening are on section 9 page 50

Jan 28, 2016 | 2013 Buick - LaCrosse

1 Answer


It may be adjustable - for that info you need to check manual that came with car.

Nov 24, 2015 | 2013 Buick - LaCrosse

1 Answer

My 2010 Buick lacrosse sunroof will not close all the way

An what would you like to know ? How to fix it , how to close it ? There are complex electronics involved , An if you are not familiar with these thing's I suggest you take to a qualified repair shop ! It should still be under warranty !
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

May 16, 2015 | 2010 Buick LaCrosse

1 Answer

How do I remove the battey from a Buick LaCrosse?

follow this link as has video of the procedure which is simple but easier to send video than to type the procedure
Battery Replacement 2010 2013 Buick LaCrosse 2011 Buick LaCrosse CX 2...

May 02, 2014 | 2010 Buick LaCrosse CXS

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