Raise the front end of the vehicle and support the sub
frame with jack stands. The lower control arms should hang
Remove the shock absorber.
Remove the wheel.
Disconnect the stabilizer bar from the lover control
arm. The bar can remain attached to the frame brackets.
Position a floor jack under the lower control
arm. (GM parts departments have a special adapter for use with floor jacks
which cradle the inner bushings.)
Slowly raise the jack to relieve the tension on the
lower control arm pivot bolts. At this point the spring is under
pressure. Install a chain around the spring and through the
control arm as a safety measure. Run the chain above the coil
closest to the control arm that is accessible, since the spring coils
will rise when they are uncompressed. Check that the floor jack
is firmly supporting the control arm and will not slip.
With tension off the pivot bolts, remove the rear
pivot bolt nut. Remove the forward pivot bolt and nut. It may be necessary
to follow the bolts through the control arm with a hammer and
punch. The control arm is still attached to the steering
Slowly and carefully lower the floor jack. The
control arm should lower with it.
Before removing the spring, note it's position in relation to its bottom seat and the identifying tag attached
to one of the coils.
When all the compression is relieved from the spring,
remove the safety chain and lift the spring from it's perch.
During installation, be sure that the coil is properly
seated in the lower control arm. The end of the bottom coil
should cover all or part of one of the small inspection/drain hole
drilled in the control arm. The other hole should be partly or
The safety chain should be used again upon
installation. With the control arm and spring raised into
position, install the pivot bolts and nuts. It is necessary that
the front bolt be installed with its head towards he front of the
vehicle the rear bolt can be installed in either direction.
Torque-tighten these bolts to specifications before lowering the jack
and removing the safety chain.
Install the remaining components in the reverse order
of disassembly and tighten all fasteners to the proper torque.