Also included with this Corvette Performance valve body is a "corvette" 2nd servo, Torlon check balls and an
upgraded ACDelco separator Also included with this Corvette Performance valve body is a "corvette" 2nd servo,
Torlon check balls and an upgraded ACDelco separator plate. ACDelco 12 month / 12,000 mile warranty.
Between the years 1996 and 2000 GM had wear issues with the 4L60E valve bodies. Because of the oscillating action of the
TCC valve in operation, wear in the valve bore of the valve body casting is common. Usually the first symptom is a
"service engine soon" light and a DTC P1870 code is stored in the PCM. This code is set when the PCM recognizes
transmission clutch slippage while in 3rd or 4th gear range. The clutch slippage is usually in the 3-4 clutch setup
or the torque converter clutch.
If this condition is not corrected immediately clutch failure will soon follow. The AFL valve in these valve bodies have the same wear
characteristics which causes low line pressure. The only correct repair procedure is to machine the valve body and use a quality