No Reverse Gear

WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.

Checks	Action
Input Shaft on the Forward Clutch Assembly (106)	Inspect for a broken tooth. Replace the forward clutch housing assembly (302). Forward Clutch Assembly Disassemble
Forward Clutch Assembly (106)	Inspect for: Damaged reverse internal gear (313) and retaining ring (314). Damaged reverse sun gear assembly (308) Damaged or worn reverse sun gear thrust bearing (307) Forward Clutch Assembly Disassemble
Reverse Clutch Assembly	Inspect for: Damaged or worn splines of the reverse clutch backing plate (112) Broken or damaged backing plate retaining ring (111) Damaged or worn splines of the reverse clutch plate (114), apply plate (115) and waved plate (116) Worn splines or friction material in the reverse clutch plate assemblies (113) Damaged or worn reverse carrier assembly (108) and thrust washers (107) Damaged or worn reverse clutch spring assembly (110) and retaining ring (109) Damaged reverse clutch spring assembly (119) and worn seals (117, 118) Reverse Carrier Removal , Reverse Clutch Spring Removal , Reverse Clutch Plate and Reverse Clutch Piston Removal
Manual Valve (234)	Inspect for wear, sticking or binding. Control Valve Solenoid Body Cleaning and Inspection