Door & Tailgate Locks

• Description
• Operation
  • Cadillac
  • Buick
• Troubleshooting
  • Automatic Locks Inoperative Locks Operate From Door Switches
  • Doors Unlock Automatically Do Not Lock Automatically
    • Eldorado and Seville
    • DeVille and Fleetwood
    • Buick
  • Doors Lock Automatically Do Not Unlock Automatically
    • Cadillac
  • Doors Lock Automatically With Door(S) Open & Selector Lever In "Drive"
  • Locks Do Not Operate Automatically Or From Armrest Switches
  • Doors Lock Automatically But Do Not Unlock With Key
    • Buick
  • Doors Do Not Lock Automatically When Selector Lever In "Park"
    • Cadillac
  • Doors Lock Automatically With Selector In "Drive", But Seat Not Occupied
    • Cadillac
• Testing
  • Motor Lock Relay Test
    • All Models
  • Unlock Relay
    • Cadillac
    • Buick
• Removal & Installation
  • Module & Relays
    • Removal
    • Installation
  • Printed Circuit Board
    • Removal
    • Installation
  • Back-Up Light/Neutral Start Switch
    • Removal
    • Installation
  • Seat Sensor (CADILLAC)