Harsh, Soft, Delayed or Slipping 1-2-3-4 Shift

WARNING: This page is about a different car, the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Cadillac Escalade EXT, 2007 Cadillac Escalade ESV, and 2007 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.

Checks	Causes
1-2-3-4 and 3-5-R Clutch Assembly (51)	Inspect for damaged or worn 1-2-3-4 clutch plates (408-410). Inspect for damaged 1-2-3-4 clutch piston (414), piston housing (417), spring (413), and dam assembly (412). Inspect for damaged 1-2-3-4 clutch piston dam retaining ring (411). Inspect for cut, worn, or damaged 1-2-3-4 clutch piston seal (416), inner seal (423), and housing seals (424 and 425). Inspect for improper selective 1-2-3-4 clutch backing plate retaining ring (429). Inspect for damaged 1-2-3-4 clutch backing plate (407). Inspect for worn splines on the backing plate.

Checks

Causes

1-2-3-4 and 3-5-R Clutch Assembly (51)

Inspect for damaged or worn 1-2-3-4 clutch plates (408-410).
Inspect for damaged 1-2-3-4 clutch piston (414), piston housing (417), spring (413), and dam assembly (412).
Inspect for damaged 1-2-3-4 clutch piston dam retaining ring (411).
Inspect for cut, worn, or damaged 1-2-3-4 clutch piston seal (416), inner seal (423), and housing seals (424 and 425).
Inspect for improper selective 1-2-3-4 clutch backing plate retaining ring (429).
Inspect for damaged 1-2-3-4 clutch backing plate (407). Inspect for worn splines on the backing plate.