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. Place the ignition switch in the OFF or the LOCK position.
  2. Place the headlamp switch in the OFF position.

Is the lamps-on warning alarm present?

--

Go to Step 7

Go to Step 3

3

Place the ignition switch in the RUN position.

Is the lamps-on warning alarm present?

--

Go to Step 5

Go to Step 4

4

Place the headlamp switch in the HEAD or the PARK position.

Is the lamps-on warning alarm present?

--

Go to Step 12

Go to Step 6

5

Replace the audio alarm module. Refer to Multifunction Alarm Module Replacement .

Is the repair complete?

--

Go to Audible Warnings System Check

--

6

Inspect for an intermittent failure mode. Refer to the Troubleshooting Procedures.

Did you refer to the appropriate procedure?

--

Go to Audible Warnings System Check

--

7

  1. Disconnect headlamp and panel dimming switch.
  2. Measure voltage at J1 to ground.

Is there a voltage?

--

Go to Step 8

Go to Step 14

8

  1. Remove the audio alarm module from the convenience center.
  2. Connect a DMM from the convenience center cavity J1 to ground.

Is there battery voltage?

--

Go to Step 9

Go to Step 5

9

  1. Remove the illumination fuse #14 from the instrument panel fuse block.
  2. Connect a voltmeter from the convenience center cavity J1 to ground.

Is there battery voltage?

--

Go to Step 10

Go to Step 11

10

Repair the short to voltage in CKT 8 (GRY) between the instrument panel fuse flock and the convenience center.

Is the repair complete?

--

Go to Audible Warnings System Check

--

11

Repair the short to voltage in CKT 44 (DK GRN) between the instrument panel fuse block cavity D4 and the headlamp and panel dimmer switch. Refer to the Instrument Panel Dimming Diagnostic Tabled in Lighting Systems for more information.

Is the repair complete?

--

Go to Audible Warnings System Check

--

12

  1. Remove the audio alarm module from the convenience center.
  2. Connect a voltmeter from the convenience center CKT 39 (PNK) cavity K4 to ground.

Is there battery voltage?

--

Go to Step 5

Go to Step 13

13

Repair the open in CKT 39 (PNK) between the instrument panel fuse block and the convenience center.

Is the repair complete?

--

Go to Audible Warnings System Check

--

14

Replace the headlamp and panel dimmer switch.

Is the repair complete?

--

Go to Audible Warnings System Check

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