GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Audible Warning System Check?

--

Go to Step 2

Go to Audible Warnings System Check

2

  1. Disconnect the connector at the multi-function alarm module.
  2. Disconnect connector C200 at the steering column.
  3. Connect a J 39200 DMM between the multi-function alarm module connector, cavity C1 for CKT 80 (LT GRN), and ground.

Is continuity present?

--

Go to Step 3

Go to Step 4

3

Repair the short to ground in CKT 80 (LT GRN) between the multi-function alarm module and connector C200.

Is the key-in-ignition chime present with the left front door closed?

--

Go to Step 4

Go to Audible Warnings System Check

4

Reconnect the connector at the multi-function alarm module. Refer to Multifunction Alarm Module Replacement .

Is the alarm present?

--

Go to Step 5

Go to Step 6

5

Replace the multi-function alarm module.

Is the key-in-ignition chime present with the left front door closed?

--

Go to Step 6

Go to Audible Warnings System Check

6

  1. Ensure that the key is not in the ignition switch.
  2. Ensure that the left front door is closed.
  3. Connect a J 39200 DMM between connector C200, cavity B3 for CKT 80 (LT GRN), and ground.

Is continuity present?

--

Go to Step 7

Go to Step 8

7

Repair the short to ground in CKT 80 (LT GRN) in the steering column.

Is the key-in-ignition chime present with the left front door closed?

--

Go to Step 8

Go to Audible Warnings System Check

8

Connect a J 39200 DMM between connector C200, cavity B4 for CKT 159 (TAN), and ground.

Is continuity present?

--

Go to Step 9

Go to Step 10

9

Repair the short to ground in CKT 159 (TAN) in the steering column.

Is the key-in-ignition chime present with the left front door closed?

--

Go to Step 10

Go to Audible Warnings System Check

10

Connect a J 39200 DMM between the pigtail leads for CKT 80 (LT GRN) and CKT 159 (TAN) of the key-in warning switch.

Is continuity present?

--

Go to Step 11

Go to Step 12

11

Replace the key-in warning switch.

Is the key-in-ignition chime present with the left front door closed?

--

Go to Step 12

Go to Audible Warnings System Check

12

  1. Disconnect the connector at the left front door jamb switch.
  2. Connect a J 39200 DMM between the left front door jam switch connector, cavity C for CKT 159 (TAN), and ground.

Is continuity present?

--

Go to Step 13

Go to Step 14

13

Repair the short to ground in CKT 159 (TAN) between connector C200 and the left front door jamb switch.

Is the key-in-ignition chime present with the left front door closed?

--

--

Go to Audible Warnings System Check

14

Replace the left front door jamb switch.

Is the key-in-ignition chime present with the left front door closed?

--

--

Go to Audible Warnings System Check