2021 Jeep Grand Cherokee TrackhawkFACTORY OEM SERVICE PROCEDURE

Sensor, Knock: Removal: 6.4L: Notes

Two knock sensors are used. Each sensor is bolted to the outside of the cylinder block below the exhaust manifold.

NOTE:

Note the foam strip on bolt threads. This foam strip is used only to retain the bolts to the sensors for plant assembly. It is not used as a sealant. Do not apply any adhesive, sealant or thread locking compound to these bolts.

Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

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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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