GM Service Manual Online
For 1990-2009 cars only

Step

Action

Values

Yes

No

 

1

Inspect fuse EF15.

Is fuse EF15 open?

--

Go to Step 2

Go to Step 3

2

  1. Check for a short circuit and repair it, if necessary.
  2. Replace the open fuse.

Is the repair complete?

--

System OK

--

3

  1. Turn the lamp switch ON.
  2. Use a voltmeter to check battery voltage available at fuse EF15.

Does the battery voltage match the value specified?

11-14 V

Go to Step 5

Go to Step 4

4

Repair the open circuit power supply circuit to fuse EF15.

Is the repair complete?

--

System OK

--

5

  1. Turn the lamp switch ON.
  2. Remove the automatic transaxle position lamp.
  3. Use a voltmeter to check battery voltage available at the lamp socket.

Does the battery voltage match the value specified?

11-14 V

Go to Step 7

Go to Step 6

6

Repair the open circuit between the automatic transaxle position lamp socket and fuse EF15.

Is the repair complete?

--

System OK

--

7

  1. Turn the lamp switch ON.
  2. Remove the automatic transaxle position lamp.
  3. Use an ohmmeter to check the resistance between the ground circuit and the lamp socket.

Is the resistance equal to the value specified?

0 ohms

Go to Step 9

Go to Step 8

8

Repair the open ground circuit between the automatic transaxle position lamp socket and ground.

Is the repair complete?

--

System OK

--

9

Replace the automatic transaxle position lamp.

Is the repair complete?

--

System OK

--