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Turn Signal/Multifunction Switch C4 (C25)

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Turn Signal/Multifunction Switch C4 (C25) Connector End View
GM1492427Courtesy of GENERAL MOTORS CORP.
Lighting Systems Connector End Views

Connector Part Information 
  • OEM: 15418023
  • Service: See Catalog
  • Description: 5-Way M Unsealed (BK)
Terminal Part Information 
  • Terminal: SHCMW-A03T-040/Tray 20
  • Core/Insulation Crimp: J/J
  • Release Tool/Test Probe: 12094429/J-35616-13
Turn Signal/Multifunction Switch C4 (C25)

Pin Wire Color Circuit No. Function
1 BK/WH 1551 Ground
2 GY 391 Rear Window Wiper Switch Signal
3 L-GN 2270 Rear Window Washer Relay Control
4-5 - - Not Used