Chevrolet Silverado: Vehicle Checks / Automatic Transmission Shift Lock Control Function Check

Chevrolet Silverado 2019-2025 Owners Manual / Vehicle Care / Vehicle Checks / Automatic Transmission Shift Lock Control Function Check

Warning

When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured.

Before starting this check, be sure there is enough room around the vehicle. It should be parked on a level surface.
Apply the parking brake. Be ready to apply the regular brake immediately if the vehicle begins to move.
With the engine off, turn the ignition on, but do not start the engine. Without applying the regular brake, try to move the shift lever out of P (Park) with normal effort. If the shift lever moves out of P (Park), contact your dealer for service.

Starter Switch Check

Warning When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured. Before starting this check, be sure there is enough room around the vehicle...

Ignition Transmission Lock Check

If equipped with Key Access ignition, while parked, and with the parking brake set, try to turn the ignition off in each shift lever position. The ignition should turn to off only when the shift lever is in P (Park)...

Other information:

Chevrolet Silverado 2019-2025 Owners Manual: Driver Information Center (DIC) (Midlevel and Uplevel)

The DIC displays are shown in the center of the instrument cluster in the Info app. See Instrument Cluster. The displays show the status of many vehicle systems. If the vehicle has a diesel engine, see the Duramax diesel supplement. or : Press to move left or right between the interactive display zones in the cluster...

Chevrolet Silverado 2019-2025 Owners Manual: Immobilizer

See Radio Frequency Statement. Immobilizer Operation This vehicle has a passive theft-deterrent system. The system does not have to be manually armed or disarmed. The vehicle is automatically immobilized when the vehicle is turned off. The system is automatically disarmed when the ignition is turned from off to on...