GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Radio/Navigation System Schematics

Connector End View Reference: Entertainment/Communication Connector End Views

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

2

  1. Turn ON the ignition, with the engine OFF.
  2. Turn ON the radio.

Does the radio operate normally?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3

  1. Clean the tape head path using J 39916-A CD and Cassette Diagnostic Audio Kit.
  2. Reset the display by pushing and holding the eject button for 5 seconds.

Does the radio display CLN or CLEAN?

Go to Step 4

Go to Step 5

4

Replace the radio. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 5

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5

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3