Yukon Denali AWD V8-6.2L (2007)
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.
GMC Workshop Service and Repair Manuals
Transmission Control Systems >
< Spark Plug|Specifications|Page 11429
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