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Home >> Chevrolet >> 2005 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 707 (Automatic Transaxle - 4T80-E - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Description And Operation >> Automatic Transmission Hydraulic Diagrams >> Overdrive Range, 4-3 Downshift >> Fourth Band Releases >> Fourth Servo Assembly

Fourth Servo Assembly

WARNING: This page is about a different car, the 2008 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.

Spring force actuates the fourth servo piston and returns the piston to its band released position. This movement forces fourth band fluid from the other side of the piston back through its circuit to the 1-2 shift valve.

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