C 3500 Truck 2WD V8-393 6.5L DSL Turbo (1992)
Seals and Gaskets: Technical Service Bulletins
A/T - Reusable Bottom Pan Seal
BULLETIN NO.: 9174L80-E-16
CORP. REF. NO.: 177123
DATE: Sept., 1991
TRANSMISSION APPLICATIONS:
1991-1992 HYDRA-MATIC 4L80-E/4L80-EHD
(MT1)
TRANSMISSION MODELS:
All Models
SUBJECT:
Reusable Bottom Pan Seal
(Service Manual Information)
VEHICLE APPLICATIONS:
C/K, R/V, and P-Trucks G-Van
Service Information:
The HYDRA-MATIC 4L80-E Transmission bottom pan seal (29) is reusable. When removing the bottom pan (28) it is recommended to inspect the seal
for any possible leak points that may cause future concerns:
Tears in the rubber bead Missing torque limiters or washers Broken carrier seal
If no signs have been found, then clean off seal with clean soft cloth. Clean case and pan areas with part solvent before reinstalling seal.
