GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Backup Lights System Check performed?

--

Go to Step 2

Refer to Backup Lamp System Check

2

  1. Turn the ignition switch to the RUN position.
  2. Disconnect the backup lamp switch (M/T), or the park/neutral position switch (A/T).

Do the backup lamps light?

--

Go to Step 3

Go to Step 4

3

Locate and repair the short to B+ in one of the following locations:

    • CKT 1324 (LT GRN)
    • CKT 1524 (GRY)
    • The underhood fuse block

Is the repair complete?

--

Refer to Backup Lamp System Check

--

4

Adjust the appropriate switch:

    • The backup lamp switch
    • The park/neutral position switch

Do the switches adjust properly?

--

Refer to Backup Lamp System Check

Go to Step 5

5

Replace the appropriate switch:

    • The backup lamp switch
    • The park/neutral position switch

Is the repair complete?

--

Refer to Backup Lamp System Check

--