Low and Reverse Band Releases
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.
Low and Reverse Servo
Low band fluid pressure exhausts from the servo, releasing the servo and the low and reverse band.