GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you review the Ignition Lock System Description and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Steering Wheel and Column

2

Verify that the lock system sticks in the START position.

Does the lock system operate normally?

System OK

Go to Step 3

3

Inspect the lock module assembly for damage.

Is the lock module assembly damaged?

Go to Step 6

Go to Step 4

4

Inspect the lock cylinder for damage.

Is the lock cylinder damaged?

Go to Step 7

Go to Step 5

5

Inspect the ignition switch for damage.

Is the ignition switch damaged?

Go to Step 8

Go to Step 3

6

Tighten the lock module assembly mounting bolts. Refer to Fastener Tightening Specifications .

Did you complete the repair?

Go to Step 9

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7

Replace the lock cylinder. Refer to Ignition Lock Cylinder Replacement - On Vehicle .

Did you complete the repair?

Go to Step 9

--

8

Replace the ignition switch. Refer to Ignition Switch Replacement - On Vehicle .

Did you complete the repair?

Go to Step 9

--

9

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3