GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Was A Diagnostic System Check performed?

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

2

  1. Block the wheels or set the parking brake.
  2. Turn the ignition switch to the ON position. Do not start the engine.
  3. Disconnect the backup lamp switch (M/T) or the park/neutral position switch (A/T).

Do the backup lamps turn OFF?

Go to Step 3

Go to Step 4

3

Replace or adjust the backup lamp switch (M/T) or the park/neutral position switch (A/T).

Is the repair complete?

System OK

--

4

Repair the short to power in the Back up lamp feed Circuit.

Is the repair complete?

System OK

--