how come my 4t60 has a speed sensor from a 3t40?

[Hairdo12]

ok, what the hell is this? my spedometer stops registering anything over 32 mph so i go to autozone to get a new speed sensor and and i end up with a speed sensor that looks identical to the one my hayes manual calls for, and for my car it is the only one listed for my year and modle (92 lumina 3.1 4t60). so anyways the picture for the 3t40 speed sensor could just as well be a photo of the speed sensor on my car. this is a kick in the dick, i dont know what to think, im tired got work in about 5 hours and i know tomarrow im gonna be in a pissy mood about this. anyone have any ideas? btw the tranny is original.

Thanks :dammit:

[Brian P]

....both tranny's use the same sensor, maybe that????

[THe_DeTAiL3R]

yeah the '88 and '89 have 2 different VSS, same engine and tranny though. (I swapped my 88 to an 89). Its all in the computer.