GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Audible Warnings Diagnostic System Check performed?

--

Go to Step 2

Go to Diagnostic System Check - Audible Warnings

2

  1. Remove the audio alarm module from the convenience center.
  2. Disconnect steering column harness connector C266.
  3. Using a J 39200 DMM, test for continuity between cavity J3 of the convenience center to connector C266 cavity B3.

Is there continuity?

--

Go to Step 3

Go to Step 4

3

  1. Place the key in the ignition switch.
  2. Connect a J 39200 DMM between connector C266 cavity B3 and B4.

Is there continuity?

--

Go to Step 5

Go to Step 6

4

Locate and repair the open in CKT 80 (LT GRN) between the convenience center and connector C266. Refer to Wiring Repairs in wiring.

Is the repair complete?

--

Go to Diagnostic System Check - Audible Warnings

--

5

  1. Disconnect the connector at the left front door jamb switch.
  2. Connect a J 39200 DMM between connector C266 cavity B4 and the left front door jamb switch connector cavity C.

Is there continuity?

--

Go to Step 7

Go to Step 8

6

Replace the key-in warning buzzer switch. Refer to Ignition and Key Alarm Switch Assembly - Disassemble - Off Vehicle in Steering.

Is the repair complete?

--

Go to Diagnostic System Check - Audible Warnings

--

7

  1. Open the left front door.
  2. Connect a J 39200 DMM between cavity C and B of the left front door jamb switch.

Is there continuity?

--

Go to Step 9

Go to Step 10

8

Locate and repair the open in CKT 159 (TAN) between connector C266 and the left front door jamb switch. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Diagnostic System Check - Audible Warnings

--

9

Connect a J 39200 DMM from the left front door jamb switch connector cavity B and ground G200.

Is there continuity?

--

Go to Step 11

Go to Step 12

10

Replace the left front door jamb switch. Refer to Door Jamb Switch Replacement in Doors.

Is the repair complete?

--

Go to Diagnostic System Check - Audible Warnings

--

11

Replace the audio alarm module.

Is the repair complete?

--

Go to Diagnostic System Check - Audible Warnings

--

12

Locate and repair the open in CKT 150 (BLK) between the left front door jamb switch and ground G200. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Diagnostic System Check - Audible Warnings

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