2017 Buick LaCrosse BaseFACTORY OEM SERVICE PROCEDURE

Initialization/Teach Procedure

Step 1 - Fully close the sunroof glass by holding down the close switch. Once in the closed position, release the switch. Now press the switch again and continue to hold. The glass will go through a teach/learn cycle and begin to move. Continue to hold the switch until the glass returns to a fully closed position.

Step 2 - Fully close the sunroof sunshade by holding down the close switch. Once in the closed position, release the switch. Now press the switch again and continue to hold. The sunshade will go through a teach/learn cycle and begin to move. Continue to hold the switch until the sunshade returns to a fully closed position.

NOTE:

Please note that if the switch is held for more than 10 seconds after the glass or sunshade has completed its teach/learn cycle, the sunroof can throw a 'stuck switch' fault code. If this happens repeat the 2 steps above.

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.