A/T - Valve Body R&R, Avoid Breaking Wire Connectors
GMC NUMBER: 92-7A-117GROUP: 7A Automatic Transmission
DATE: August 1992
CORPORATE NUMBER: 277128R
SUBJECT:
INFORMATION ON AVOIDING DISTRESSED WIRE CONNECTORS
SUBJECT:
1991-92 C/K, R/V, AND G VAN WITH 4L80-E/4L80-EHD
Some high-mileage 1991-92 HYDRA-MATIC 4L80-E transmission wiring harness electrical connectors may crack or break when removing the valve body assembly rendering the connectors inoperable. For proper transmission identification see Figure 1.
This could be the result of the electrical connectors being pryed off of their connection point with a screwdriver or other similar tool when removal of the control valve body is required for servicing of a unit.
A distressed connector requires the replacement of the entire wiring harness assembly. For connector location see Figure 2.
When removing the valve body assembly, to prevent connector distress, do not pry them off their connections. Instead, disconnect the main electrical connector from the transmission case and remove the entire wiring harness assembly with the valve body. Avoid removing the electrical connectors unless the procedure is absolutely necessary (i.e., replacement of the wiring harness).