GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Tilt/Telescoping Steering Column Schematics

Connector End View Reference: Component Connector End Views

DEFINITION: Tilt function is Inoperative, but telescope function operates normally.

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

2

Verify that the steering column tilt function is inoperative.

Does the tilt motor 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. With the scan tool, detect telescope/tilt switch parameter in the tilt/telescope module data display list.

Does the scan tool display the idle state?

Go to Step 4

Go to Step 6

4

When tilt/telescoping manual switch moves up/down from neutral position, observe tilt/telescoping switch parameter on tilt/telescoping module data display list.

Did the parameter change as expected?

Go to Step 5

Go to Step 7

5

When tilt/telescoping manual switch moves up/down from neutral position, observe tilt/telescoping output parameter on tilt/telescoping module data display list.

Did the parameter change as expected?

Go to Step 8

Go to Step 9

6

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

Does the scan tool display the idle state?

Go to Step 10

Go to Step 12

7

Check tilt/telescope steering column switch up and down signal circuit for an open or a short to voltage. Refer to Circuit Testing and Wiring Repairs.

Go to Step 16

Go to Step 9

8

Check the steering column tilt driver control circuit for a short or open to voltage. Refer to Circuit Testing and Wiring Repairs

Did you find and correct the condition

Go to Step 16

Go to Step 11

9

Check tilt driver position sensor 5-volt reference circuit and ground 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

Check for poor connections at the harness connector of the tilt/telescope steering column tilt driver. 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 memory seat module (MSM). 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.

Did you complete the replacement?

Go to Step 16

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14

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

Did you complete the replacement?

Go to Step 16

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15

Note: Perform the set up procedure for the memory seat module.

Replace the memory in seat module. Refer to Control Module References.

Did you complete the replacement?

Go to Step 16

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16

Calibrate the steering column. Refer to Telescoping Steering Column Calibration.

Did you complete the operation?

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