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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 166 (Engine Controls And Fuel - 3.6L (LGX LF4) - Repair Instructions) >> Repair Instructions >> Spark Plug Replacement (LF4) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Spark Plugs
    GM3587377Courtesy of GENERAL MOTORS COMPANY
  1. If reusing the spark plugs, refer to Spark Plug Inspection .
  2. If using NEW spark plugs do NOT attempt to check gap or damage can occur, plugs come pre gapped.
  3. Install the spark plug(s) and tighten to 18 N.m (13 lb ft).
  4. Install the ignition coil(s). Refer to Ignition Coil Replacement - Bank 1 (LF4) , and/or Ignition Coil Replacement - Bank 2 (LF4) .