Test Description

The numbers below refer to the step numbers on the diagnostic table.

1. 2. Tests for voltage at the coil side of the lock cylinder relay.
2. 3. Verifies that the DIM is providing ground to the lock cylinder relay.
3. 4. Tests if ground is constantly being applied to the ignition lock cylinder control actuator.

Fig 1: Ignition Can/Cannot Be Turned Off With Transmission - Diagnostic Table (Steps 1 - 4)

Courtesy of GENERAL MOTORS CORP.

Fig 2: Ignition Can/Cannot Be Turned Off With Transmission - Diagnostic Table (Steps 5 - 16)

Courtesy of GENERAL MOTORS CORP.