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Home >> Chevrolet >> 2018 >> Suburban 3500 HD LT >> Repair and Diagnosis >> External Pages >> Different car >> Section 8 (Engine Controls And Fuel - 5.3L (L83) Or 6.2L (L86) - Repair Instructions) >> Repair Instructions >> Spark Plug Wire Replacement

Spark Plug Wire Replacement

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Fig 1: Spark Plug Wire
GM3239343Courtesy of GENERAL MOTORS COMPANY
Callout Component Name
Preliminary Procedure 
Remove the valve rocker arm cover insulator. Refer to Valve Rocker Arm Cover Insulator Replacement - Left Side , and/or Valve Rocker Arm Cover Insulator Replacement - Right Side .
1 Spark Plug Wire

Procedure

  1. Twist the spark plug wire boot 1/2 turn and remove the spark plug wire.
  2. Inspect the spark plug wire for damage and replace if necessary.
  3. Inspect the inside of the spark plug rubber boot for a thin, even coat of grease. If there is no grease present or additional grease is necessary, apply a thin coating of dielectric grease evenly to the inside of the spark plug rubber boot up to a depth of 15 mm from the end of the boot. Refer to Adhesives, Fluids, Lubricants, and Sealers .
NOTE:

Pull only on the spark plug wire boot to remove the wire.

NOTE:

To ensure the spark plug wire rubber boots are correctly seated during installation, push the boot onto the ignition coil until two audible clicks are heard, and push the rubber boot onto the spark plug until one audible click is heard.