Avalanche 1500 2WD V8-5.3L (2008)
3. Loosen the spark plug 1 or 2 turns.
4. Brush or air blast away any dirt or debris from around the spark plug.
5. Remove the spark plug.
6. Install the J 22794 into the spark plug hole.
7. Attach an air hose to the J 22794 .
8. Apply compressed air to the J 22794 in order to hold the valves in place.
9. Use the J 38606 in order to compress the valve spring.
10. Remove the valve stem keys (225).
11. Carefully release the valve spring tension.
12. Remove the J 38606 .