GM Service Manual Online
For 1990-2009 cars only

Diagnostic Aids

The fuse for the left-side tail lamps is also part of the headlamps-on reminder chime circuit. The headlamps-on reminder chime should operate when the ignition is OFF, the headlamps or parking lamps are ON, and the driver door is open.

Step

Action

Values

Yes

No

1

Turn the parking lamps ON, and observe the tail lamps.

Are the tail lamps operating correctly?

--

Go to Step 3

Go to Step 2

2

Repair the left side tail lamps.

Does the headlamps-on reminder chime work?

--

System OK

Go to Step 3

3

  1. Disconnect the chime module electrical connector.
  2. Turn ON the headlamps.
  3. Measure the voltage at terminal 6 of the chime module connector.

Is the voltage equal to the specified value?

11-14 V

Go to Step 5

Go to Step 4

4

Repair the open circuit between fuse EF15 and terminal 6 of the chime module connector.

Is the repair complete?

--

System OK

--

5

Use an ohmmeter to measure the resistance between ground and terminal 5 of the chime module.

Does the ohmmeter indicate continuity?

--

Go to Step 7

Go to Step 6

6

Repair the open circuit between ground and terminal 5 of the chime module.

Is the repair complete?

--

System OK

--

7

  1. Remove the driver door contact switch.
  2. Remove the electrical connector from the driver door contact switch.
  3. Use an ohmmeter to measure the resistance between the driver door contact switch connector and the chime module terminal 4.

Does the ohmmeter indicate continuity?

--

Go to Step 9

Go to Step 8

8

Repair the open circuit between the driver door contact switch connector and the chime module terminal 4.

Is the repair complete?

--

System OK

--

9

  1. Connect the electrical connector to the chime module.
  2. Connect a jumper wire between ground and the connector for the driver door contact switch.
  3. Turn OFF the ignition.
  4. Turn ON the lights.

Does the headlamps-on reminder chime operate?

--

Go to Step 11

Go to Step 10

10

Replace the chime module. Refer to Audio Alarm Module Replacement .

Is the repair complete?

--

System OK

--

11

Replace the driver door contact switch. Refer to Door Jamb Switch Replacement .

Is the repair complete?

--

System OK

--