Riviera V6-3.8L SC VIN 1 (1995)
Suspension Strut / Shock Absorber: Customer Interest
Suspension - Underbody Noise from Rear of Vehicle
File In Section: 3 - Steering/Suspension
Bulletin No.: 53-34-04A
Date: June, 1996
Subject:
Underbody "Loose Lumber" or Rubber Thumping Noise from Rear of Vehicle (Replace Rear Shock Mount and Add Washer)
Models:
1995-96 Buick Riviera
1995-96 Oldsmobile Aurora
This bulletin is being revised to update the correction procedure and add a part number and artwork. Please discard Corporate Bulletin Number 53-34-04
(Section 3 - Steering/Suspension).
Condition
Some owners may comment on a "loose lumber" or rubber thumping noise coming from the rear of the vehicle when encountering small to medium road
impacts.
Correction
Replace production rear shock mount with revised rear shock mount and add 2 mm washer between the lower retainer and the shock mount.
1.
Road test and verity noise.
2.
Remove necessary trunk trim to access the left and right upper shock mounts.
3.
Remove shock mount cover.
4.
Remove center (shock to shock mount) nut and retainer.
5.
Remove shock mount (mount to body) nuts and reinforcement plate.
6.
Disconnect ELC air line from shock.
7.
Compress shock down and remove shock mount. Leave the lower retainer on the shock shaft.
Important:
Make note the orientation of the shock mount to shock. The new mount must be installed in the same position as the original mount.
Important:
Be sure to reuse the original upper and lower retainers when installing the revised shock mount.
