2006 Chevrolet Impala SSFACTORY OEM SERVICE PROCEDURE

Turn Signal/Multifunction Switch C3

WARNING: This page is about a different car, the 2006 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Turn Signal/Multifunction Switch C3 Connector End View
GM39746Courtesy of GENERAL MOTORS CORP.
Lighting Systems Connector End Views

Connector Part Information 
  • OEM: 12064862
  • Service: 12126438
  • Description: 8-Way F Metri-pack 150 Series (BK)
Terminal Part Information 
  • Pins: F, G, H
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit
Turn Signal/Multifunction Switch C3

Pin Wire Color Circuit No. Function
A-E - - Not Used
F L-BU/WH 1414 Left Turn Signal Switch Signal
G BK 350 Ground
H D-BU/WH 1415 Right Turn Signal Switch Signal
Factory Service Tools

Use the Manual With the Right Hardware

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.