GM Service Manual Online
For 1990-2009 cars only

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Schematic Reference: Tilt/Telescoping Steering Column Schematics

DEFINITION: This table is for a tilt/telescoping steering column system in which only the telescope functions are inoperative

1

Did you perform the Tilt/Telescoping Steering Column Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Steering Wheel and Column - Tilt

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

Does the scan tool indicate the Idle state?

Go to Step 4

Go to Step 6

4

With the scan tool, observe the Telescope Tilt Switch parameter in the 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

With the scan tool, observe the Telescope Tilt Output parameter in the 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 11

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 9

Go to Step 11

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 in Wiring Systems.

Did you find and correct the condition?

Go to Step 15

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 in Wiring Systems.

Did you find and correct the condition?

Go to Step 15

Go to Step 10

9

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 in Wiring Systems.

Did you find and correct the condition?

Go to Step 15

Go to Step 12

10

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 in Wiring Systems.

Did you find and correct the condition?

Go to Step 15

Go to Step 13

11

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 in Wiring Systems.

Did you find and correct the condition?

Go to Step 15

Go to Step 14

12

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

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

Did you complete the replacement?

Go to Step 15

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13

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

Replace the telescope actuator. Refer to Telescope Actuator Assembly Replacement - On Vehicle .

Did you complete the replacement?

Go to Step 15

--

14

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 15

--

15

Perform the Steering Column Control Module Programming. Refer to Steering Column Control Module Programming .

Did you complete the action?

Go to Step 16

--

16

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2