Sierra 2500 Denali 2WD V8-6.0L (2011)
9. Release the tabs that are holding the wiredress cover to the connector body.
10. Remove the nose piece by inserting a small flat-blade tool into the slots on both ends of the connector body. Gently pry the nose piece out of the
connector. J-38125-216 can also be used to remove the nose piece.
11. Use the J-38125-12A tool to release the terminals by lifting the terminal retaining tabs on the inside of the connector.