gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

A/T - Loss of 3RD/Direct Clutch Distress or Slips In `R'|Page 4405 > < A/T - No Movement in Drive or 3rd Gear|Page 4400
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Clutch: Customer Interest
A/T - Loss of 3RD/Direct Clutch Distress or Slips In `R'

BULLETIN NUMBER:
92-7A-133

SECTION:
7A

NUMBER:
2

CORPORATE
REFERENCE NUMBER:
277137

DATE:
October 1992

SUBJECT:
LOSS OF THIRD, DIRECT CLUTCH DISTRESS AND/OR SLIPS IN REVERSE (NEW DISHED PLATE)

MODELS:
1992 C/K, P TRUCK AND G-VAN

CONDITION:
Some 1992 HYDRA-MATIC 4L80-E/4L80-EHD transmissions may experience Loss of Third, Direct Clutch Distress and/or Slips 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:

A/T - Loss of 3RD/Direct Clutch Distress or Slips In `R'|Page 4405 > < A/T - No Movement in Drive or 3rd Gear|Page 4400