K 2500 Yukon 4WD V8-6.0L VIN U (2000)
6. Valve spring compressor J38606 may be used in place of J5892-D.
7. Install the valve keys (5). Use grease in order to hold the valve keys in place.
8. Carefully release the valve spring pressure, making sure the valve keys stay in place.
9. Remove the J5892-D and the J22794.
10. Install the spark plugs. Refer to Spark Plug Replacement.
11. Install the valve rocker arms. Refer to Valve Rocker Arm and Push Rod Replacement.