The M32 gearbox in your car can be fitted with 3 different types of shifter systems.
Generation one (Till model year 2013), Generation two (model year 2013-2016) and generation 3 (all from model year 2017 and younger) transmissions.
They are all complete different from each other.
It depends on the year of manufacture which shifter system is fitted by GM.
Not sure which 4H-TECH Short Shifter will fit your M32 gearbox?
Here's a little help! (click)
L-Shift (MY 2013-2016)
M32 Nylon shift bush