Noise in Second or Sixth Gear

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Checks	Causes
Center Support with 2-6 Low and Reverse Clutch Assembly (67)	Inspect for damaged or worn output carrier outer sun gear shaft front bushing (458). Inspect for damaged or worn output carrier outer sun gear shaft rear bushing (460). Inspect for damaged 2-6 clutch backing plate (451). Inspect for worn splines on backing plate. Inspect for damaged 2-6 clutch backing plate retaining ring (450). Inspect for damaged 2-6 clutch piston assembly (457), spring (456), retaining ring (455), and center support assembly (459).

Checks

Causes

Center Support with 2-6 Low and Reverse Clutch Assembly (67)

Inspect for damaged or worn output carrier outer sun gear shaft front bushing (458).
Inspect for damaged or worn output carrier outer sun gear shaft rear bushing (460).
Inspect for damaged 2-6 clutch backing plate (451). Inspect for worn splines on backing plate.
Inspect for damaged 2-6 clutch backing plate retaining ring (450).
Inspect for damaged 2-6 clutch piston assembly (457), spring (456), retaining ring (455), and center support assembly (459).