4-5-6 Clutch Dampener Overhaul

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
NOTE: 6L45 models DO NOT include a 4-5-6 clutch dampener.
1	4-5-6 Clutch Dampener Retaining Ring CAUTION: Ensure the retaining ring is fully seated when installed. Using a screwdriver, fully seat the retaining ring into the groove by pushing on the inside diameter around the whole circumference. If the retaining ring is not fully seated, transmission damage will result.
2	4-5-6 Clutch Dampener Apply Plate
3	4-5-6 Clutch Dampener Procedure Dry and inspect the clutch dampener for the following conditions: Pitting Flaking Delamination Wear Glazing Cracking If any of these conditions are found, replace the dampener.