A/T - Revisions
File In Section: 7 - TransmissionBulletin No.: 67-71-51
Date: September, 1996
INFORMATION
Subject:
New Product Information
Models:
1997 Chevrolet Camaro, Corvette
1997 Pontiac Firebird
1997 Chevrolet and GMC C/K, M/L, S/T, G Models
1997 Oldsmobile Bravada
with HYDRA-MATIC 4L60-E Transmission (RPO M3O)
The HYDRA-MATIC 4L60-E transmission has received the following refinements for the 1997 model year (Figures 1-7):
^ Oil Pump (13 Vanes)/to Balance Pressure and Reduce Noise
^ Channeling in Pump Cover/13 Vane Pump
^ Input-Stamped and Bonded Pistons (Forward and Overrun Clutches)/Eliminated Forward Clutch Damage
^ Spring Assembly (Overrun Clutch)/Bonded Piston Change
^ Reverse and Low and Reverse Clutch Pack Turbulator Plates (Slots in Plates)/to Improve Cooling and Lubrication
^ 3-4 Clutch Friction Plates/New Material for Improved Durability
^ 3-4 Clutch Steel Plates/New Material for Improved Durability
^ Aluminum Spool Valves/Anodized Material to Reduce Leakage
^ Wiring Harness/Push-on Feature, Positive Pressure Control Solenoid Connector to Ease Assembly
^ Revised Speed Sensor Bracket/New Protective Bracket for Shipping