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Tim's Auto Repair
Tim's Auto Repair, mechanic
Category: Chevy
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Experience:  Have owned a repair shop for 25 yrs.
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what gap do i set my plugs on a 2002 chev 1500 silverado 5.3L truck

Resolved Question:

what gap do i set my plugs on a 2002 chev 1500 silverado 5.3L truck
Submitted: 7 years ago.
Category: Chevy
Expert:  Tim's Auto Repair replied 7 years ago.


these set at .060


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Service and Repair



  1. Remove the spark plug wires.



  1. Loosen each spark plug 1 or 2 turns.
  2. Brush or air blast away any dirt from around the spark plugs.
  3. Remove the spark plugs 1 at a time. Place each plug in a tray marked with the corresponding cylinder numbers.


  1. Properly position each spark plug washer.
  2. Inspect each spark plug gap. Adjust each plug as needed. Specification Spark plug gap: 1.524 mm (0.060 in) . NOTE: Refer to Fastener Notice in Service Precautions.
  3. Hand start the spark plugs in the corresponding cylinders.
  4. Tighten the spark plugs. Tighten
    • For used heads tighten the spark plugs to 15 N.m (11 lb ft) .
    • For new aluminum heads tighten the spark plugs to 20 N.m (15 lb ft) .
    • For new iron heads tighten the spark plugs to 30 N.m (22 lb ft) .
  1. Install the spark plug wires.
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