so thru my travles i have acquired a few different key fobs, and talking to Mr keyless entry (Don) we both have learned a thing or 2 about the keyless entry systems in the Bonnevilles
in the early years of the Bonneville 90-91 GM used a 103T or a 104T transmitter
this Transmitter had Plastic buttons
from the years 92-95 GM used either a 302T or a 303T transmitter for the Bonnevilles
this trans mitter had rubber buttons (which suck)
my GOAL was to change my Pontiac 303T to the plastic buttons
so i came across a Buick regal with the key Fob on the junkyard....i comapared this to a 303T Transmiitter that i had found from a Park Avenue......
here is the 104 on the left, and the 303 on the right
104 on the bottom 303 on the top
now here you can see the difference in the buttons
the only modification to the Pad that is needed to adapt the newer buttons. you need to cut out the pad so it will clear the screw hole in the Fob
assembled and ready to go
now i went out to the car to test....OMFG the plastic buttons are SOOOOO much better than the orignal rubber, you can feel the actuall click as apposed to the soft mush feel....
i recommend if you can find a key fob with the plastic buttons you make the swap