GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Audible Warnings Diagnostic System Check?

--

Go to Step 2

Go to Diagnostic System Check - Audible Warnings

2

Perform the Audio System Diagnostic System Check.

Did you complete the inspection?

--

Go to Step 3

Go to Intermittents and Poor Connections

3

Inspect Body Control Module (PZM) connector C1 for proper connection.

Is the connection OK?

--

Go to Step 5

Go to Step 4

4

Repair poor connection.

Is the repair complete?

--

Go to Diagnostic System Check - Audible Warnings

--

5

Replace the Body Control Module (PZM).

Is the replacement complete?

--

Go to Diagnostic System Check - Audible Warnings

--