2008-2013 Cadillac CTS Performance Mods Discussion, axle ratio in Cadillac CTS Second Generation Forum - 2008-2013; The rpo code list for my car has a G80 DIFFERENTIAL, LIMITED SLIP and GU5 AXEL REAR, 3.23 RATIO. Does ...
Hi to all
let me throw in, what I have seen in writing.
I got two build sheets, 2011 CTS 3.6DI 6sp-AT Wagon RWD and 2011 CTS 3.6DI 6sp-AT Coupe, RWD
Both had RPO G80 for Limited Slip Positraction.
The Coupe lists RPO GT4 for 3.73 rear ratio
The Wagon lists RPO GU6 for 3.42 rear ratio