WARNING:
You can lose control of the vehicle if you try to
adjust a manual driver's seat while the vehicle is
moving. The sudden movement could startle and
confuse you, or make you push a pedal when you
do not want to. Adjust the driver's seat only when
the vehicle is not moving.

If the vehicle has a manual seat, it can be moved forward or rearward.
1. Lift the bar to unlock the seat.
2. Slide the seat to the
desired position and
release the bar.
Try to move the seat with your body to be sure the seat is locked in place.
Seat Height AdjusterChevrolet Cobalt Service & Repair Manual. Description
AC-Delco Tandem Diaphragm Type
This unit utilizes a vacuum power
chamber, consisting of a front and rear shell, housing divider, front and
rear diaphragm, plate assemblies, hydraulic pushrod and a diaphragm return
spring, Fig. 1.
In normal operating mode, with
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