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Home >> Cadillac >> 2017 >> XT5 Base >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission Range Select System >> Diagnostic Information and Procedures >> DTC P1787 or P17C8: Unexpected Range Change Detected/Transmission Range Control Module Range Motor Command Performance - Protection Mode Active >> Repair Instructions
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Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Refer to Control Module References for module replacement, programming and setup.

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