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

Using a scan tool, establish communication with the remote CD changer.

Does the CD changer work remotely through the scan tool?

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Go to Step 3

Go to Step 4

3

Inspect for a open in the E&C serial bus circuit, between the radio and the remote CD changer. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Step 8

Go to Step 6

4

Inspect for an open in the B+ feed circuit of the remote CD changer. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 8

Go to Step 5

5

Inspect for an open in the ground circuit of the remote CD change. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 8

Go to Step 7

6

Replace the Radio. Refer to Radio Replacement .

Did you complete the replacement?

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Go to Step 8

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7

Replace the remote CD changer. Refer to Cassette Player Care and Cleaning .

Did you complete the replacement?

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Go to Step 8

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8

Operate the system in order to verify the repair.

Is the repair complete?

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Go to Symptoms

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