GM Service Manual Online
For 1990-2009 cars only
Table 1: Struts Seem Weak
Table 2: Struts are Noisy
Table 3: Leaks

Struts Seem Weak

Checks

Actions

Check the tire pressures.

Adjust the tire pressures to the specifications on the tire placard.

Check the load conditions under which the vehicle is normally driven.

Consult with the owner to confirm the owner's understanding of normal load conditions.

Check the compression and rebound effectiveness of the shock absorber.

Quickly push down and then lift up on the corner of the bumper nearest the shock absorber being tested. Compare the compression and rebound with those of a similar vehicle that has an acceptable ride quality. Replace the shock absorber, if needed.

Struts are Noisy

Checks

Actions

Check the mountings for looseness or damage.

Tighten the shock absorber mounting nuts. Replace the shock absorber, if needed.

Check the compression and rebound effectiveness of the shock absorber.

Quickly push down and then lift up on the corner of the bumper nearest the shock absorber being tested. Compare the compression and rebound with those of a similar vehicle that has an acceptable ride quality. Replace the shock absorber, if needed.

Leaks

Checks

Actions

Check for a slight trace of fluid.

The shock absorber is OK.

Check the seal cover on the fully extended strut.

Replace the shock absorber.

Check for an excessive amount of fluid on the shock absorber.

Replace the strut dampener.