Bonneville V6-231 3.8L VIN 3 SFI (1988)
VAMAC (R) material. The 3rd clutch inner piston seal is identical to the previous but does not have the hash marks. The new input inner piston seal is a
short lip design.
DATE OF PRODUCTION CHANGE:
Beginning December 18, 1989 (Julian Date 352), all 1990-91 HYDRA-MATIC 4T60 transaxle has been built using the short lip design for the input
inner piston seal and VAMAC (R) material for the input/3rd inner piston seals.
SERVICE PARTS INFORMATION:
Short lip seals and the VAMAC (R) material seals are inter-changeable with the current seals. These new seals will service all 1984 through 1991
models. The new design will replace the current seal in service packages as stock is depleted.
SERVICE MANUAL REFERENCE:
Refer to the appropriate 1984 through 1991 Service Manuals for proper disassembly and assembly procedures.
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indicate any preference for or assume any responsibility for the products or equipment from these firms or for any such items which may be available
from other sources."
