Riviera V6-231 3.8L VIN C SFI (1989)
Axle Nut: All Technical Service Bulletins
Parts & Service Procedure Information
PARTS INFORMATION
Parts required to complete this campaign are to be obtained from General Motors Service Parts Operations (GMSPO). To ensure these parts will be
obtained as soon as possible, they should be ordered from GMSPO on a C.I.O. order, with NO special instruction code, but on an advise code (2).
NOTICE:
Parts must be ordered according to VIN range. Be certain to check the VIN of the vehicle being serviced to obtain the correct parts.
Refer to the Vehicles Involved section of this bulletin.
VIN Range
Part Number
Description
Quantity
Group 1
3634775
Service Kit*
1
7466961
Hub & Bearing Assy
As Required**
14084119
Bearing Seal
As Required**
22529144
Brake Caliper Bolt
As Required
(two per Hub and Bearing Assembly)
Group 2
14035592
Torque Prevailing Nut 2
10049691
Large Washer
2
*
NOTICE: Each Service Kit contains 2 splined washer adapters, 2 washers, 2 torque prevailing nuts and 2 nut retainers for servicing both the left
and right front drive axles.
**NOTICE: It is anticipated that less than 10% of the hub and bearing
assemblies within the Group 1 VIN ranges will require replacement. Bearing assemblies are not included in the Service Kit and must be
ordered separately. Please adjust your parts orders accordingly. Vehicles within the Group 2 VIN range should not require any wheel
bearing assembly replacements.
SERVICE PROCEDURE (Applies to both left and right front drive axles)
Group 1 (Riviera KU400001-KU401763 and Reatta KB900001-KB901034)
1.
Support front of vehicle. Lift vehicle enough to removal most of the weight of the vehicle from the ground, but keep the tires on the ground to
prevent rotation during torque readings.
2.
Remove front wheel covers or wheel inserts.
3.
Loosen drive axle nut one-sixth turn (one flat).
4.
Tighten nut to original position.
5.
Check and record torque to re-loosen drive axle nut.
ILLUSTRATION # 2
Group 2 (Riviera KU401764-KU403487 and Reatta KB901035-KB901911)
1.
Support front of vehicle. Lift vehicle enough to remove most of the weight of the vehicle from the ground, but keep the tires on the ground to
prevent rotation during torque readings.
