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Home >> Buick >> 2017 >> LaCrosse Base >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Automatic Transmission Range Select Lever >> Diagnostic Information and Procedures >> DTC P1787 or P17C8: Unexpected Range Change/Transmission Range Control Module Range Motor >> Repair Instructions

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for module replacement, programming and setup.