GM Service Manual Online
For 1990-2009 cars only

Radio Control Switches Will Not Illuminate

Step

Action

Value(s)

Yes

No

1

Check the STR WHL ILLUM Fuse.

Is the fuse open?

--

Go to Step 2

Go to Step 3

2

Repair a short to ground in circuit 1458.

Has the repair been made and the system rechecked?

--

Refer to Interior Lights Dimming System Check in Lighting Systems

--

3

Using a test light, backprobe connector C205 between terminal E to ground.

Does the test light illuminate?

--

Go to Step 5

Go to Step 4

4

Repair a poor connection or an open in circuit 1458 between the fuse block terminal H4 and C205 terminal E.

Has the repair been made and the system rechecked?

--

Refer to Interior Lights Dimming System Check in Lighting Systems

--

5

Using a test light, backprobe connector C205 between terminal E and terminal F.

Is the test light on?

--

Go to Step 7

Go to Step 6

6

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

Has the repair been made and the system rechecked?

--

Refer to Interior Lights Dimming System Check in Lighting Systems

--

7

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

Is the test light on?

--

Go to Step 9

Go to Step 8

8

Replace the inflatable restraint steering wheel module coil. Refer to Inflatable Restraint Steering Wheel Module Coil Replacement .

Has the repair been made and the system rechecked?

--

Refer to Interior Lights Dimming System Check in Lighting Systems

--

9

Replace the bulbs in the radio control switches.

Has the repair been made and the system rechecked?

--

Refer to Interior Lights Dimming System Check in Lighting Systems

--