Why is the abs stabilizer light coming on in 2010 Buick lacrosse

Question edited for clarity.
Question moved to model clarity.

https://www.google.com/search?q=2010+Buick+LaCrosse+3.0.+cylinder+head+bolt+Torque

Your best bet is to call your local dealer. They can tell any and all recall for your vehicle from your VIN #

Normally accessed from the back shelf. It slides left or right to unlatch the cover. You may have LED bulbs in the unit, in which case the whole strip have to be replaced.

https://www.google.com/search?q=2012+buick+lacrosse+third+brake+light+replacement

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THERE IS A SWITCH UNDER HOOD IT IS EITHER BROKEN OR DICONNECTED

VVS sensor .It senses how fast each wheel is spinning 1 on each front wheel .They are moveing parts that spin that work like maginet passing a peice of metal then its open then metal so it generates a pulse it is a simply generator puts out about 5 volts DC you can spin the tire and measure it with a volt meter.
Some times dirt can block them up or a bad correction to them road salt ECT.
This would give you an ABS light because that is what the abs controls under certin brakeing condutions how fast the wheels are spinning witch could also set off the inbalance switch for the regular brakeing system .
Their is also a 3rd sensor on the back or tailstock of the transmission VSS vehicle speed sensor witch relays all of the information to the VCM OR PCM basicaly the computer
So check connections check for debire .Its much more simple then it sounds .Its in the front sensors

Its Time You Replace That old Piece Of Junk With A KIA Sedona With A 10 Year Warrenty!!!

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...

it a anti brake syatem

Please see my tip at http://www.fixya.com/cars/r6003525-abs_traction_control_lights and let me know if you have questions.