GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2000 🢒 Regal (China) 🢒 Body and Accessories 🢒 Lighting Systems 🢒 Backup Lamps Always On

Step

Action

Value(s)

Yes

No

1
  1. Shift the transaxle into the PARK position.
  2. Turn the ignition switch to the RUN position.
  3. Disconnect the park/neutral position (PNP) switch connector C1.

Are the backup lamps ON?

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Go to Step 3

Go to Step 2

2

Adjust or replace the PNP switch. Refer to Park/Neutral Position Switch Adjustment in Automatic Transaxle - 4T65E.

Is the repair complete?

--

Go to Diagnostic System Check - Lighting Systems

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3

Repair a short to B+ in circuit 24.

Is the repair complete?

--

Go to Diagnostic System Check - Lighting Systems

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