A/T - Loss of 3rd, Direct Clutch Distress/Slip In `R'

Number: 92-299-7A
Section: 7A
Date: SEPT. 1992
Corporate Bulletin No.: 277137
ASE No.: A2

Subject:
LOSS OF THIRD DIRECT CLUTCH DISTRESS AND /OR SLIP IN REVERSE

Model and Year:
1992 C/K, P TRUCKS AND G VAN

TRANSMISSION APPLICATIONS:
1992 HYDRA-MATIC 4L80-E/4L80-EHD (MT1)

TRANSMISSION MODELS:
All

SUBJECT:
Loss of Third, Direct Clutch Distress, Slips in Reverse (New Dished Plate)

VEHICLE APPLICATIONS:
C, K, P Trucks, G-Van

CONDITION:

Some 1992 HYDRA-MATIC 4L80-E/4L80-EHD transmissions may experience Loss of Third, Direct Clutch Distress and/or Slip in Reverse.

CAUSE:

This can be caused by the Direct Clutch Dished Plate damage or cracking.

CORRECTION:

A new Direct Clutch Dished Plate (609) was released with a new material that increases the durability.

DATE OF PRODUCTION: (Figure 1)

Starting October 1, 1991 (Julian Date 274) all 1992 HYDRA-MATIC 4L80-E/4L80-EHD models were built with the new Direct Clutch Dished Plate.

PARTS INFORMATION:

Part Number Name

8680816 Plate-Clutch (.054 Dished)

Parts are currently available at GMSPO.

SERVICE MANUAL REFERENCE:

Refer to your appropriate service manual for correct replacement procedures.