LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Jeep >> 2021 >> Grand Cherokee Trackhawk >> Repair and Diagnosis >> Engine Performance >> Ignition System (Service Information) >> Sensor, Knock >> Removal >> 3.6L
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Sensor, Knock: Removal: 3.6L

  1. Perform the fuel pressure release procedure. Refer to FUEL SYSTEM PRESSURE RELEASE .
  2. Disconnect and isolate the negative battery cable.
  3. Drain the cooling system. Refer to DRAINING .
  4. Remove the air cleaner housing assembly, upper and lower intake manifolds and the oil filter housing. Refer to HOUSING, OIL FILTER, REMOVAL .
    GC0144204Courtesy of CHRYSLER GROUP, LLC
    NOTE:

    The forward knock sensor (1) is known to the Powertrain Control Module (PCM) as knock sensor 1. The rear knock sensor (3) is known to the PCM as knock sensor 2.

  5. Remove the wire harness connector (4).
    NOTE:

    There may be a foam strip on the bolt threads. This foam 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.

  6. Remove the mounting bolt (2) and knock sensor 1 (1) or knock sensor 2 (3).