Sierra 1500 4WD V8-6.0L (2007)
7. Remove the jounce bumper (5) from the top mount assembly (3).
8. Secure the jounce bumper upright in a bench vise. Only clamp the lower portion of the bumper to allow the upper portion of the ID to remain at
rest.
Note
A standard drill bit will not cut the ID of the jounce bumper. The jounce bumper will comply and stretch around the bit, then return after the drill
is removed.
9. Prepare a single flute countersink bit or a bladed cutting bit, or equivalent, in a die grinder, Dremmel Tool, or equivalent.
