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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1681 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Description And Operation) >> Description and Operation >> Automatic Transmission Hydraulic Diagrams >> Overdrive Range, 4-3 Downshift >> 2-4 Servo Assembly

2-4 Servo Assembly

WARNING: This page is about a different car, the 2010 GMC Sierra and 2010 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The 4th fluid exhausts from the 4th apply piston in the servo assembly. The apply pin spring moves the 4th apply piston and the apply pin in order to release the band from the reverse input drum and shift the transmission into third gear.

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