Service Information

Volt

No Reverse Gear

Checks

Causes

Carrier Assembly

•	Inspect the carrier assembly for damaged pinion gears, thrust washers, pins, and rollers.

•	Inspect for damaged thrust bearings.

•	Inspect for damaged sun gears.

•	Inspect the carrier assembly for damaged output carrier rear sun gear thrust bearing (captured).

Drive Motor with Generator - Position B (2)

Motor Failure

•	Inspect 3 phase cables.

•	Inspect connections at motor.

•	Inspect motor end bearings.

Thrust Bearing 1st 2nd and 3rd Positions Assembly

Inspect the bearing for wear or damage.

Output Shaft Assembly

Inspect for damaged internal gears.

Front Differential Carrier Assembly

Inspect for damaged gears and bearings.

Front Differential Drive Pinion (w/Transfer Gear) Gear Assembly

Inspect for damaged gears and bearings.

Sun Gear

Inspect for spline wear or damage.

Fluid Filter Assembly

•	Inspect for damaged or restricted fluid filter assembly.

•	Inspect for damaged fluid filter seal assembly or improper sealing interface, leaks, and fluid aeration.

Automatic Transmission Fluid Pump Seal

Inspect for worn or damaged seal.

Auxiliary Fluid Pump Seal

Inspect for worn or damaged seal.