9-7X V8-5.3L (2005)
Fluid Pump: Technical Service Bulletins
A/T - 4L60-E/4L65-E/4L70-E, Product Update
Bulletin No.: 05-07-30-028A
Date: May 08, 2006
INFORMATION
Subject:
4L60-E / 4L65-E / 4L70-E Automatic Transmission Product Update
Models:
2005 GM Passenger Cars and Light Duty Trucks
2005 HUMMER H2
2005 Saab 9-7X
with 4L60-E, 4L65-E or 4L70-E Automatic Transmission (RPOs M30, M33, M32, M70)
Supercede:
This bulletin is being revised to reflect recent pump cover changes. Please discard Corporate Bulletin Number 05-07-30-028 (Section 07 -
Transmission/Transaxle).
This purpose of this bulletin is to update technicians to changes in the 4L60-E, 4L65-E and 4L70-E automatic transmissions.
Pump Cover Changes
Effective February 1, 2005, the pump cover (215) now uses a new torque converter clutch (TCC) valve (224) with a single torque converter clutch
(TCC) valve outer spring (246) (View 1). The single spring replaces the double spring design (View 2).
The new TCC valve (224) (View 1), incorporates a spring pocket to prevent incorrect installation. The valve will only allow the spring to be installed in
the pocket-end of the valve.
