G 2500 3/4 Ton Van V6-262 4.3L VIN Z (1992)
Seals and Gaskets: All Technical Service Bulletins
A/T - Reusable Bottom Pan Seal Inspection
GMC NUMBER: 92-7A-11
GROUP: 7A Automatic Transmission
DATE: September, 1991
CORPORATE NUMBER: 177123
SUBJECT:
REUSABLE BOTTOM PAN SEAL FOR 4L80-E/4L80-EHD
MODELS:
1991 AND 1992 C/K, R/V, G, P WITH 4L80-E AUTOMATIC TRANSMISSIONS
Figure 1
Service Information:
Refer to figure 1. 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 a clean soft cloth. Clean case and pan areas with parts solvent before
reinstalling seal.
