Harsh, Soft, Delayed or Slipping First, Third, Fifth, Sixth or Seventh Shift

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.

Checks	Causes
1-3-5-6-7 Clutch Assembly (57)	Inspect for damaged or worn 1-3-5-6-7 clutch plates (511 - 512). Inspect for damaged 1-3-5-6-7 clutch piston (509), clutch housing (506), return spring (515), and piston dam (516). Inspect for damaged 1-3-5-6-7 clutch piston dam retaining ring (517). Inspect for cut, worn or damaged 1-3-5-6-7 clutch piston seals (507, 508), and dam seal (510). Inspect for improper selective 1-3-5-6-7 clutch backing plate retaining ring (514). Inspect for damaged 1-3-5-6-7 clutch backing plate (513). Inspect for worn splines on backing plate.

Checks

Causes

1-3-5-6-7 Clutch Assembly (57)

Inspect for damaged or worn 1-3-5-6-7 clutch plates (511 - 512).
Inspect for damaged 1-3-5-6-7 clutch piston (509), clutch housing (506), return spring (515), and piston dam (516).
Inspect for damaged 1-3-5-6-7 clutch piston dam retaining ring (517).
Inspect for cut, worn or damaged 1-3-5-6-7 clutch piston seals (507, 508), and dam seal (510).
Inspect for improper selective 1-3-5-6-7 clutch backing plate retaining ring (514).
Inspect for damaged 1-3-5-6-7 clutch backing plate (513). Inspect for worn splines on backing plate.