Overrun Clutch Installation

WARNING: This page is about a different car, the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Overrun Clutch Plates

Courtesy of GENERAL MOTORS CORP.

Inspect the fiber plate assemblies (645B) and the steel plates (645A) for the following defects:
- Damaged tangs
- Delamination
- Excessive wear
- Wear or heat damage

Fig 2: Aligning Overrun Clutch Plates

Courtesy of GENERAL MOTORS CORP.

Install the overrun clutch plates into the input housing starting with a steel plate (645B) and alternating with fiber plate assemblies (645A).
Index the plates in the input housing with the wide notches remaining open.

Fig 3: Input Sun Gear Bearing Assembly

Courtesy of GENERAL MOTORS CORP.

Install the input sun gear bearing assembly (637) into the input housing.