Transfer Case Selector Switch – GM (15693423)

Transfer Case Selector Switch is an electrically controlled component in the engine or transmission management system. Because the module cross-checks it against other inputs, a fault here often surfaces as a code for a different circuit.

Replace the Case Selector Switch when a value freezes or drops out intermittently, which usually means an internal fault rather than wiring. Wiggle-testing the harness while watching live data separates the two.

This Case Selector Switch is listed under part number 15693423, filed under Sensors & Switches. If the original number is unreadable, send us the VIN and we will confirm the reference before dispatch.

This is GM dealer-sourced stock rather than an equivalent, so the number on the Case Selector Switch traces straight back to the manufacturer.