Reverse Servo (4L80-E): Removal

WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, and 2002 GMC C3500 HD. However, it is still accessible from the selected car via links, so may be relevant.

Raise and support vehicle. Remove the transmission oil pan and filter. See DRAINING & REFILLING under LUBRICATION. Remove the rear servo assembly from the transmission case as follows:

Cover bolts (6).
Cover (5).
Cover gasket (4).
Bottom retaining clip (3).
Servo piston (2).
Outer ring oil seal (1).
Inner ring oil seal (7).
Accumulator piston (8).
Piston seal (9).
Washer (10).
Servo spring (11).
Servo spring retainer (12).
Selective pin (13).
Accumulator spring (14).

See Figure.