Direct Clutch Applies

WARNING: This page is about a different car, the 2007 Pontiac G5 Pursuit, 2007 Pontiac G5, and 2007 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

2-3 Shift Solenoid Valve

The PCM energizes the normally open 2-3 shift solenoid valve, which blocks the 2-3 signal fluid from exhausting. The 2-3 signal fluid pressure is routed to both of the 1-2 and 2-3 shift valves.

2-3 Shift Valve

The 2-3 signal fluid pressure moves the valve against a spring force in order to initiate the 2-3 upshift. The 2-3 drive fluid is routed through the valve and into the 3-4 drive fluid circuit.

#5 Checkball (Direct Clutch Apply)

The 3-4 drive fluid pressure seats the #5 checkball, and 3-4 drive fluid is forced through the #26 orifice and into the direct clutch feed fluid circuit. the #26 orifice helps to control the direct clutch apply.

Direct Clutch

The direct clutch fluid pressure applies the direct clutch, causing the transmission to shifts into Third gear.

3-4 Shift Valve

The 3-4 drive fluid is also routed to the 3-4 shift valve in preparation for a 3-4 upshift.