SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 1 (ENGINE CONTROL SYSTEM - 4.8L, 5.3L, AND 6.0L - INTRODUCTION (2 OF 2))REPAIR INSTRUCTIONSSPARK PLUG REPLACEMENTINSTALLATION PROCEDURE
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2

Installation Procedure

2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Installation Procedure
WARNING: This page is about a different variant/trim than selected.
    Fig 1: View Of Spark Plug And Sparkplug Seat
    GM14824Courtesy of GENERAL MOTORS CORP.
  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)

  3. Hand start the spark plugs in the corresponding cylinders.
    4. NOTE: Refer to Fastener Notice in Cautions and Notices.
  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).

  5. Install the spark plug wires. Refer to Spark Plug Wire Replacement .
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.