Knock Sensor (KS)

2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Knock Sensor (KS)
WARNING: This page is about a different car, the 2007 GMC Savana and 2007 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Knock Sensor (KS) Connector End View
GM684833Courtesy of GENERAL MOTORS CORP.
Knock Sensor (KS) Connector & Terminal Parts Information

Connector Part Information 
  • OEM: 12129140
  • Service: 12085491
  • Description: 2-Way F Metri-Pack 280.1 Series Sealed - Pull To Seat (BK)
Terminal Part Information 
  • Terminal/Tray: 12077939/18
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 12180559-1/J-35616-4A (PU)
Knock Sensor (KS) Terminal Identification

Pin Wire Color Circuit No. Function
A D-BU 496 KS Signal
B GY 1716 KS Signal
RENDER: 1.0x

NO RELATED

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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.