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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 >> Neutral - Engine Running >> Boost Valve

Boost Valve

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.

Reverse input fluid pressure exhausts and line pressure returns to the normal operating range as in the Park and Overdrive positions.

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