NEW DESIGN INPUT CLUTCH AND THIRD CLUTCH SEAL INSTALLERS

1984-88 MODELS EQUIPPED WITH THM 440-T4 (ME9) TRANSAXLE

VEHICLE APPLICATIONS:

1984-88 Cutlass Ciera, Delta 88, Ninety-Eight, Toronado 1988 Cutlass Supreme

BULLETIN COVERS:

This bulletin will supplement Dealer Technical Bulletin 86-T-63B regarding a new 3rd clutch inner seal replacement for a long and/or delayed 2-3 shift condition.

New seal installation tools are being released for the input clutch inner piston seal (629) and the 3rd clutch inner piston seal (635). These tools will be shipped in January 1988 and are to be used when servicing the input clutch assembly on all 1984 through 1988 vehicles equipped with a THM 440-T4 transaxle.

DATE OF PRODUCTION CHANGE: (Figure 1) ------------------------------------- July 29, 1986 Julian Date 210) all 1987 THM 440-T4 transaxles were built using a new design input housing and shaft assembly (626). Refer to Figure 2 for the specific changes.

SERVICE ACTION:

When servicing the input clutch housing and shaft assembly on a 1984 through 1988 THM 440-T4 transaxle use the new seal installation tools, J 37361 and J 37362 (Figure 3). The previous design tools, J 34091 and J 34092 will work on 1984-86 transaxles only.

SERVICE MANUAL REFERENCE:

Use Figure 3 to update information contained in your 1987 and 1988 THM 440-T4 Automatic Transaxle Unit Repair section.

SERVICE NOTES:

For warranty purposes, when replacing the input clutch inner piston seal and 3rd clutch inner piston seal use labor operation K7535. For this operation, refer to the appropriate labor time guide for applicable labor time information.

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.