Riviera V6-231 3.8L VIN C SFI (1989)
Axle Nut: All Technical Service Bulletins
Campaign - Front Drive Axle Nut Replacement
Model Year 1989
Bulletin No. 89-C-7
File in Group 4
Number 2
Date Sept., '89
SUBJECT:
FRONT DRIVE AXLE NUT REPLACEMENT
MODELS AFFECTED:
1989 RIVIERA AND REATTA
CONDITION
General Motors has determined that some 1989 Riviera and Reatta model vehicles may have been assembled with front drive axle nuts that may loosen
slightly. If this occurs, the clamp load for the wheel bearing may decrease resulting in reduced bearing life or bearing failure.
