Repairing a broken clutch wave plate

May 9, 2012
A harsh shifting condition on select GM vehicles may be due to a broken 35R clutch wave plate. Applicable vehicles include 2007-2009 Saturn Aura and Outlook, 2008-2009 Saturn Vue, 2007-2009 GMC Acadia, 2007-2009 Pontiac G5, 2008-2009 Pontiac Torrent, 2008-2009 Buick Enclave, 2008-2009 Chevrolet Equinox and Malibu, and 2009 Chevrolet Traverse (all equipped with the 6T70/75 6-speed automatic transmission.

A harsh shifting condition on select GM vehicles may be due to a broken 35R clutch wave plate. Applicable vehicles include 2007-2009 Saturn Aura and Outlook, 2008-2009 Saturn Vue, 2007-2009 GMC Acadia, 2007-2009 Pontiac G5, 2008-2009 Pontiac Torrent, 2008-2009 Buick Enclave, 2008-2009 Chevrolet Equinox and Malibu, and 2009 Chevrolet Traverse (all equipped with the 6T70/75 6-speed automatic transmission.

The condition may include the Ses light and/or no reverse, and a slip/flare or harsh shifts in drive range 3rd and/or 5th gear. Codes P0776 Clutch Pressure Control (PC) Solenoid 2-Stuck Off and P0842 Transmission Fluid pressure (TFP) Switch 1 Circuit Low Voltage may be set.

A broken 35R clutch wave plate allows the piston to overstroke, causing the piston to leak and causing loss of apply on vehicles with more than 25,000 miles.

During the repair process, it is important to install the wave plate in proper orientation to prevent the possibility for the failure to reoccur. Install the rounded edge of the wave plate internal splines facing the 35R piston.

Sponsored Recommendations

Learn how electronic parking brake actuators have replaced manual systems and now play a key role in advanced safety features like automatic emergency braking. This WIYB Training...
Not all fuel injectors are created equal. In this WIYB Training Series, we compare Standard® Fuel Injectors against OE, low-cost imports. See why precision engineering and rigorous...
Carrying active OEM subscriptions for all manufacturers is not possible for many shops. However, access to this software is required for certain modern vehicles and repairs, and...
Learn how to properly lubricate your AIRCAT air tools to keep them running at peak performance. Discover essential daily maintenance and storage techniques, along with the right...

Voice Your Opinion!

To join the conversation, and become an exclusive member of Vehicle Service Pros, create an account today!