GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Backup Lights System Check?

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Go to Step 2

Go to Backup Lamp System Check

2

  1. Place the ignition switch in the RUN position.
  2. Place the gear selector in REVERSE.
  3. Disconnect the park/neutral position switch (automatic), backup lamp switch (manual).

Do the backup lamps turn off?

--

Go to Step 4

Go to Step 3

3

Locate and repair the short to B+ in CKT 24 (LT GRN) between thew park/neutral position switch (automatic), backup lamp switch (manual) and the backup lamps.

Is the repair complete?

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Go to Backup Lamp System Check

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4

Replace the park/neutral position switch (automatic), backup lamp switch (manual).

Is the repair complete?

--

Go to Backup Lamp System Check

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