GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Tilt/Telescoping Steering Column Schematics

Connector End View Reference: Steering Wheel and Column Connector End Views

DEFINITION: The telescope function is inoperative but the tilt function operates.

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

2

Verify that the telescoping function is inoperative.

Does the telescoping function operate normally?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3

  1. Turn ON the ignition, with the engine OFF.
  2. Observe the Telescope Tilt Switch parameter in the Tilt/Telescope Module Data Display list with a scan tool.

Does the scan tool indicate the Idle state?

Go to Step 4

Go to Step 6

4

Observe the Telescope Tilt Switch parameter in the scan tool Tilt/Telescope Module Data Display list while activating the tilt/telescoping switch to the In and Out positions.

Did the parameter change states as expected?

Go to Step 5

Go to Step 7

5

Observe the Telescope Tilt Output parameter in the scan tool Tilt/Telescope Module Data Display list while activating the tilt/telescoping switch to the In and Out positions.

Did the parameter change states as expected?

Go to Step 8

Go to Step 9

6

  1. Turn OFF the ignition.
  2. Disconnect the steering column tilt/telescoping switch harness connector.

Does the scan tool indicate the Idle state?

Go to Step 10

Go to Step 12

7

Test both of the tilt/telescoping steering column switch In and Out signal circuits for an open or short to voltage. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 16

Go to Step 9

8

Test the steering column telescope actuator control circuits for a short to voltage or an open. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 16

Go to Step 11

9

Test the telescope actuator position sensor 5-volt reference and ground circuits for an open. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 16

Go to Step 12

10

Inspect for poor connections at the harness connector of the tilt/telescoping steering column switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 16

Go to Step 13

11

Inspect for poor connections at the harness connector of the tilt/telescoping steering column telescope actuator. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 16

Go to Step 14

12

Inspect for poor connections at the harness connector of the tilt/telescoping steering column control module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 16

Go to Step 15

13

Replace the tilt/telescope switch. Refer to Telescope Actuator Switch Replacement .

Did you complete the replacement?

Go to Step 16

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14

Replace the telescope actuator. Refer to Telescope Actuator Assembly Replacement .

Did you complete the replacement?

Go to Step 16

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15

Important: Perform the set up procedure for the tilt/telescoping steering column control module.

Replace the tilt/telescoping steering column control module. Refer to Steering Column Control Module Replacement .

Did you complete the replacement?

Go to Step 16

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16

Perform the steering column control module programming. Refer to Steering Column Control Module Programming .

Did you complete the action?

Go to Step 17

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17

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2