1-2-3-4 Clutch Piston Removal

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: 1-2-3-4 Clutch Piston

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	1-2-3-4 Clutch Piston Dam Retaining Ring CAUTION: Use care when compressing the 1-2-3-4 clutch spring and dam assembly. Compressing the dam assembly too much may damage it. CAUTION: Refer to Retaining Ring Reuse Caution . Special Tool DT 38734 Intermediate Spring Compressor Adapter For equivalent regional tools, refer to Special Tools .
2	1-2-3-4 Clutch Piston Dam Assembly
3	1-2-3-4 Clutch Spring
4	1-2-3-4 Clutch Piston It may be necessary to apply air to the apply passage in order to remove the piston. Install the 1-2-3-4 clutch housing onto the torque converter (with fluid pump) housing assembly in order to apply air. After air is applied, it may be necessary to turn the housing assembly upside down and carefully tap the housing against a flat surface in order to release the piston.