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

WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.

Checks	Causes
Hybrid Low 1-2 and Hybrid Direct 2-3-4 Clutch Assembly	Inspect for damaged or worn 1-2 and 2-3-4 clutch plates. Inspect for damaged 1-2 and 2-3-4 clutch piston, piston housing, spring, and dam assembly. Inspect for damaged 1-2 and 2-3-4 clutch piston dam retaining ring. Inspect for cut, worn, or damaged 1-2 and 2-3-4 clutch piston seal, inner seal, and housing seals. Inspect for improper selective 1-2 and 2-3-4 clutch backing plate retaining ring. Inspect for damaged 1-2 and 2-3-4 clutch backing plate. Inspect for worn splines on the backing plate.

Checks

Causes

Hybrid Low 1-2 and Hybrid Direct 2-3-4 Clutch Assembly

Inspect for damaged or worn 1-2 and 2-3-4 clutch plates.
Inspect for damaged 1-2 and 2-3-4 clutch piston, piston housing, spring, and dam assembly.
Inspect for damaged 1-2 and 2-3-4 clutch piston dam retaining ring.
Inspect for cut, worn, or damaged 1-2 and 2-3-4 clutch piston seal, inner seal, and housing seals.
Inspect for improper selective 1-2 and 2-3-4 clutch backing plate retaining ring.
Inspect for damaged 1-2 and 2-3-4 clutch backing plate. Inspect for worn splines on the backing plate.