GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

DEFINITION: The lock system will not allow the key to be turned to the OFF lock position.

1

Did you review the Steering Wheel and Column - Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Steering Wheel and Column

2

Verify that the lock system does not lock.

Does the lock system operate normally?

System OK

Go to Step 3

3

Inspect for a faulty ignition switch.

Is the ignition switch damaged?

Go to Step 5

Go to Step 4

4

Inspect the shift linkage adjustment.

Is the shift linkage adjusted incorrectly?

Go to Step 6

Go to Step 2

5

Replace the ignition switch. Refer to Ignition and Start Switch Replacement .

Did you complete the repair?

Go to Step 7

--

6

Adjust the shift linkage.

Did you complete the repair?

Go to Step 7

--

7

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2