GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you review the symptom list?

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Go to Step 2

Go to Symptoms

2

Inspect the steering wheel controls illumination fuse.

Is the fuse open?

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Go to Step 3

Go to Step 4

3

Repair a short to ground in circuit 1458.

Is the repair complete?

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Go to Interior Lights Dimming System Check

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4

Using a test lamp, backprobe the connector C205 between terminal B to ground.

Does the test lamp light?

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Go to Step 6

Go to Step 5

5

Repair the poor connection or an open in circuit 1458 or in circuit 8 between S203 and C205 terminal B.

Is the repair complete?

--

Go to Interior Lights Dimming System Check

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6

Using test lamp, backprobe the connector C205 between terminal B and terminal D.

Does the test lamp light?

--

Go to Step 8

Go to Step 7

7

Repair the a poor connection or an open in circuit 1450 between C205 terminal D and G200.

Is the repair complete?

--

Go to Interior Lights Dimming System Check

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8

  1. Disconnect the steering wheel radio control switches.
  2. Using test lamp, backprobe terminal B of the inflatable restraint steering wheel module coil to terminal D.

Does the test lamp light?

--

Go to Step 10

Go to Step 9

9

Replace the inflatable restraint steering wheel module coil.

Is the repair complete?

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Go to Interior Lights Dimming System Check

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10

Replace the bulbs.

Is the repair complete?

--

Go to Interior Lights Dimming System Check

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