NEW OUTPUT SHAFT/BEARING & 3RD ROLLER CLUTCH ASSEMBLY

MODELS AFFECTED: 1988-1990 DE VILLES, FLEETWOODS, ELDORADOS, AND SEVILLES

Some 1988-1990 DeVilles, Fleetwoods, Eldorados, and Sevilles may experience a condition of no third gear due to overheating of the third roller clutch and input sprag assemblies during overrun operation. New output shaft/bearing and third roller clutch assemblies are now available for service for certain 1988-1990 vehicles.

Parts Description (Refer to Figures 1 and 2):

The new output shaft bearing has a single row or needle bearings instead of a double row to improve oil flow to the third roller clutch input sprag assemblies.

The third roller clutch outer race has four less lube holes to keep the roller edges from dipping into the lube hole when overrunning.

Production Change Dates:

The new third roller clutch assembly went into production December 11, 1989 (Julian Date 345).

The new output shaft/bearing went into production January 25, 1990 (Julian Date 025).

Service Notes:

The new parts will assemble the same way as the previous parts.

Service Parts Information:

The new output shaft and bearing will service 1988-1990 models.

The new third roller clutch assembly will service 1989 and 1990 models back to 1988 Julian Date 333 or any vehicles that have been equipped with an input housing thrust bearing assembly. Refer to Cadillac Service Bulletin T-90-42.

P/N Description Usage

8668990 Package, Output Shaft and Bearing 1988-1990 8675032 Bearing, Input Sun Gear/Output Shaft 1988-1990 8677016 Roller Assembly Complete, Third Clutch 1989-1990

Warranty Information Operation Vehicle Series Operation Description Number C D E J K V

Clutch, Second, Reverse Band, K7535 6.0 6.6 6.6 Input and Third Clutches Input Sprag Third Roller Clutch and Reverse Reaction Drum-Replace

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.