GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

DEFINITION: . These vehicles utilize a floor shiftier with NO park lock cable. Instead, the floor shifter sends an electronic signal to the BCM which in turn sends a signal to the electronic park lock solenoid on the column lock housing.

1

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

Go to Step 2

Go to Steering Wheel and Column Description and Operation

2

Verify the key cannot be removed from the ignition lock cylinder.

Is the key stuck in the lock cylinder?

Go to Step 3

System OK

3

Is the vehicle equipped with a manual transmission?

Go to Step 8

Go to Step 4

4

Turn the ignition key to the OFF position.

Can the key be turned to the OFF position and be removed?

Go to Step 8

Go to Step 5

5

Verify the adjustment of the automatic transmission shift cable. Refer to Range Selector Lever Cable Adjustment.

Can the key be turned to the OFF position and be removed?

System OK

Go to Step 6

6

Inspect theLinear Shift Assembly.

Does theLinear Shift Assembly exhibit signs of damage or wear?

Go to Step 10

Go to Step 7

7

Verify the electrical operation of the ignition lock cylinder solenoid. Refer to Ignition Can/Cannot Be Turned Off with Transmission in Any Gear .

Can the key be turned to the OFF position and be removed?

System OK

Go to Step 8

8

Inspect for a faulty lock cylinder.

Is the lock cylinder damaged?

Go to Step 11

Go to Step 9

9

Inspect the ignition lock cylinder case.

Is the case worn, damaged or loose?

Go to Step 12

Go to Step 13

10

Replace the Linear Shift Assembly. Refer to Linear Shift Assembly Replacement .

Did you complete the repair?

Go to Step 13

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11

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

Did you complete the repair?

Go to Step 13

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12

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

Did you complete the repair?

Go to Step 13

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13

Operate the system to verify the repair.

Did you correct the condition?

System OK

Go to Step 2