Transfer Case Shift Control Switch – GM (98181804)

Transfer Case Shift Control 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 Shift Control 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.

Reference number for the Shift Control Switch: 98181804. It is filed under Sensors & Switches, and it is the number that has to match the part coming off the vehicle.

Genuine GM supplied for this Shift Control Switch, with the engineering number unchanged from the factory reference stamped on the original.