GMC Workshop Service and Repair Manuals > Sierra 1500 4WD V8-6.0L (2007) > Engine, Cooling and Exhaust | Engine | Tune-up and Engine Performance Checks | Spark Plug | Component Information | Specifications

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5. Install the spark plug wire to the spark plug.
6. Inspect the spark plug wire for proper installation:

1. Push sideways on each boot in order to inspect the seating.
2. Reinstall any loose boot.

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