2011 Chevrolet VoltFACTORY OEM SERVICE PROCEDURE

Knock Sensor Replacement

Fig 1: Knock Sensor
GM2420606Courtesy of GENERAL MOTORS CORP.
Callout Component Name
WARNING: Do not use a service jack to lift this vehicle. Lifting the vehicle with a jack could cause the vehicle to slip off the jack and roll; this could cause injury or death.
Preliminary Procedure:Β Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
1 Knock Sensor Fastener
CAUTION: Refer to Fastener Caution .

Tighten:Β  20 N.m (15 lb ft)

2 Knock Sensor
Procedure:Β 
Disconnect the electrical connector.
Factory Service Tools

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When to See a Mechanic

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

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

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