GM Service Manual Online
For 1990-2009 cars only

Step

Action

Values

Yes

No

1

Did you perform the Diagnostic System Check - Vehicle?

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Go to Step 2

Go to Diagnostic System Check - Vehicle

2

  1. Turn ON the ignition, with the engine OFF.
  2. Observe the security indicator.

Does the security indicator come ON for approximately 5 seconds and then turn OFF?

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Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3

Inspect for poor connections at the clock.

Did you find and correct the condition?

--

Go to Step 5

Go to Step 4

4

Replace the clock.

Did you complete the replacement?

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Go to Step 5

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5

Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 2