Symptoms - Automatic Transmission Shift Lock Control. Buick GL7 (Export) 2000

For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
DEFINITION: SCHEMATIC REFERENCE: Automatic Transmission Shift Lock Control Schematics.
1 | Did you review the automatic transmission shift lock control operation and perform the necessary inspections? | Go to Step 2 | Go to Automatic Transmission Shift Lock Control Description
2 | Verify the fault is present. Does the system operate normally? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3

3

1. Turn ON the ignition, with the engine OFF.
2. Press and hold the brake pedal.
3. Attempt to move the shift lever out of the PARK position.

Does the shift lever move out of the PARK position?

Go to Step 4

Go to Automatic Transmission Shift Lock Control Always On with Ignition in Run

4

1. Move the shift lever to the PARK position.
2. Release the brake pedal.
3. Block the wheels.
4. Attempt to move the shift lever out of the PARK position.

DOes the shift lever move out of the PARK position?

Go to Automatic Transmission Shift Lock Control Inoperative

Go to Step 2

5 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3