Fourth Clutch Piston Travel Check
WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 2005 GMC Yukon XL, 2005 GMC Sierra, 2005 GMC Savana Special, 2005 GMC Savana Camper Special, and 2005 GMC Savana. However, it is still accessible from the selected car via links, so may be relevant.
Using a feeler gage, measure the piston travel between the fourth clutch backing plate (524) and the fourth clutch backing plate retainer ring (523).
Piston Travel Specification: Piston travel should be 1.016-2.540 mm (0.040-0.100 in).