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Home >> Pontiac >> 2007 >> Solstice GXP, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Automatic Transmission - 5L40-E/5L50-E - Introduction (2 Of 2)) >> Description and Operation >> Automatic Transmission Hydraulic Diagrams >> Overdrive Range, Third Gear >> Fluid Pressure Directed in Preparation for a Shift to Fourth Gear

Fluid Pressure Directed in Preparation for a Shift to Fourth Gear

WARNING: This page is about a different variant/trim than selected.
2-3 Shift Valve:

2345 fluid is routed through the 2-3 shift valve (371) into the 345 fluid circuit.

X-4 Ball Check Valve:

345 fluid is routed through the X-4 ball check valve pocket. In some transmission models there is a ball check valve present which would force 345 fluid through orifice #25.

3-4 Shift Valve:

345 fluid is routed to the 3-4 shift valve (345) where it is blocked by the valve in preparation for an upshift to fourth gear.

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