A/T - Reusable Bottom Pan Seal Inspection

91chevy24

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.