GM Service Manual Online
For 1990-2009 cars only

Radio Displays CLN or CLEAN w/o UM8

Step

Action

Yes

No

Schematic Reference: Radio/Audio System Schematics

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

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 in Wiring Systems

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 in Computer/Integrating Systems for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 5

--

5

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3

Radio Displays CLN or CLEAN w/UM8

Step

Action

Yes

No

Schematic Reference: Radio/Audio System Schematics

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

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 in Wiring Systems

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 in Computer/Integrating Systems for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 5

--

5

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3