Seville V8-273 4.5L (1989)
Figure 1 - New Thrust Bearing Assembly And Input Housing
Figure 2 - New Third Roller Cam And Dam
Some 1985-1989 DeVilles and Fleetwoods or 1986-1989 Eldorados and Sevilles may experience a condition of no third gear caused by heat damage of
the thrust washer (628) and third roller clutch assembly (644). This can cause failure of the third roller clutch and result in loss of third gear. Refer to
Figures 1 and 2.
A revised thrust bearing assembly (803) is now available to replace the input shaft/sun gear thrust washer (628) and lock up sleeve (690). To
accommodate the revisions changes were also made to the input housing and shaft assembly (626), the third roller clutch dam (696), and the third roller
clutch cam (643). All the revised parts are available in a package and must be installed together. Refer to Service Parts Information.
Service Notes:
The input shaft/sun gear thrust washer and lock up sleeve is no longer available for service from GMSPO for 1987 through 1989 models. Replace worn
components for these model years with the revised thrust bearing and associated components. For 1985 and 1986 models use the revised input housing
and shaft assembly package for distressed third roller clutch and/or input thrust washer concerns.
