Equinox AWD V6-3.4L (2008)
Clutch: Customer Interest
A/T - No Reverse/3rd or 5th Gear/MIL ON/DTC P0776
TECHNICAL
Bulletin No.: 09-07-30-012B
Date: March 08, 2011
Subject: No Reverse, 3rd or 5th, Check Engine Light Illuminated, DTC P0776 (Replace 3-5 Reverse Clutch Plate (Waved))
Models:
2008-2009 Buick Enclave
2008-2009 Chevrolet Equinox, Malibu
2009 Chevrolet Traverse
2007-2009 GMC Acadia
2007-2009 Pontiac G6
2008-2009 Pontiac Torrent
2007-2009 Saturn AURA, OUTLOOK
2008-2009 Saturn VUE
All Equipped with 6T70/75 6-Speed Automatic Transmission (RPOs MH2, MH4, MH6 or MY9)
Supercede:
This bulletin is being revised to update the information. Please discard Corporate Bulletin Number 09-07-30-012A (Section 07 -
Transmission/Transaxle).
Condition
Some customers may comment about an SES light and/or no reverse and may also comment on a slip / flare or harsh shifts in drive range 3rd and/or 5th
gear. Upon investigation, the technician may find DTC P0776 (Clutch Pressure Control (PC) Solenoid 2 - Stuck Off) set. Any one of the following codes
may set independent of each other as a result of this wave plate breaking: P0777, P2723, P0717, P0716, P2715, P2714.
Cause
This condition may be caused by a broken 35R clutch wave plate allowing the apply piston to over-stroke, causing the piston to leak and causing loss of
apply. This normally will not occur before approximately 32,000 km (20,000 mi). Debris generated by the condition can affect the operation of the speed
sensors and other clutches.
Correction
Important
It is recommended that a new plate be installed any time the transmission is disassembled for any reason.
Important
The control solenoid (w/body and TCM) valve assembly should not be washed in a parts cleaner.
