GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

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

Go to Step 2

Go to Steering Wheel and Column Description and Operation

2

Verify that the ignition lock system has a high lock effort.

Does the ignition lock system operate normally?

System OK

Go to Step 3

3

Inspect for an incorrect, worn, or damaged ignition key.

Is the ignition key incorrect, worn, or damaged?

Go to Step 7

Go to Step 4

4

Inspect for a faulty ignition lock cylinder.

Is the ignition lock cylinder damaged?

Go to Step 8

Go to Step 5

5

Inspect the ignition/start switch housing for damage.

Is the ignition/start switch housing damaged?

Go to Step 9

Go to Step 6

6

Inspect the ignition/start switch for damage.

Is the ignition/start switch damaged?

Go to Step 10

Go to Step 7

7

Replace the ignition key. Refer to Key and Lock Cylinder Coding .

Did you complete the repair?

Go to Step 11

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8

Replace the ignition lock cylinder. Refer to Ignition Lock Cylinder Replacement .

Did you complete the repair?

Go to Step 11

--

9

Tighten or replace the ignition/start switch housing. Refer to Ignition and Start Switch Housing Replacement .

Did you complete the repair?

Go to Step 11

--

10

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

Did you complete the repair?

Go to Step 11

--

11

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3