GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you review the Steering wheel and Column Description and Operation?

Go to Step 2

Go to Steering Wheel and Column Description and Operation

2

Verify that a high shift effort is required in order to shift out of the PARK position.

Does the shifter operate normally?

System OK

Go to Step 3

3

Inspect for worn or damaged shift linkage components.

Are the shift linkage components worn or damaged?

Go to Step 6

Go to Step 4

4

Inspect for a damaged linear shift assembly.

Is the linear shift assembly damaged?

Go to Step 7

Go to Step 5

5

Inspect the shift cable for binding or misadjustment.

Is the shift cable binding or misadjusted?

Go to Step 8

Go to Step 3

6

Replace the shift cable. Refer to Range Selector Lever Cable Replacement in Automatic Transmission - 4L60-E/4L65-E or to Range Selector Lever Cable Replacement in Automatic Transmission - 4L80-E/4L85-E.

Did you complete the repair?

Go to Step 9

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7

Replace the linear shift assembly. Refer to Linear Shift Assembly Replacement .

Did you complete the repair?

Go to Step 9

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8

Adjust the shift cable. Refer to Range Selector Lever Cable Adjustment in Automatic Transmission - 4L60-E/4L65-E or to Range Selector Lever Cable Adjustment in Automatic Transmission - 4L80-E/4L85-E.

Did you complete the repair?

Go to Step 9

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9

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3