OEM GMC Sierra 3500 Classic Spark Plug

GMC Sierra 3500 Classic Spark Plug Parts Questions & Experts Answers

• Glow Plug
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  Q: How to replace a spark plug on GMC Sierra 3500 Classic?

  A: The first step to Spark Plug replacement begins with removing the wire by turning the boot half a turn before gently pulling the boot from the Spark Plug to break the connection. Before taking out the Spark Plug you should vacuum or brush off all soil in the area. Each new Spark Plug requires a dedicated tray which should bear the labeling for its destination cylinder number. During Spark Plug installation the washer needs proper positioning followed by a suitable check of the plug gap with necessary adjustments made. Begin with hand-starting the Spark Plug into its designated cylinder slot before fastening it to 15 n.m (11 lb ft). Reinstall the Spark Plug wire before checking the seating of each boot by gently pushing sideways. Replace any loose boot when necessary.