Ok so I have 315's on my truck and had to program to get the speedo to work right. Well I had to put that I have 33's so does that mean I don't have the stock 4.10 gears that I am supposed to have? I am hoping that they are 4.xx like 4.56 and not 3.xx. If anyone has some insight on this let me know. I am trying to figure out if I will need to re gear for 36's or not.
Disclaimer:
Dey see me Trollin' Dey hatin' for trollin dey trying to catch me ridin dirty.

look in your glovebox and see which one of these is on the RPO list
GT4 -- AXLE REAR, 3.73 RATIO
GT5 -- AXLE REAR, 4.10 RATIO
GU4 -- AXLE REAR, 3.08 RATIO
GU5 -- AXLE REAR, 3.23 RATIO
GU6 -- AXLE REAR, 3.42 RATIO
I doubt it, going from stock to the 315s isnt that big of a diff to really warrant a gear change, especially from 4.10s. My guess is you have the 4.10s, and I wouldn't put re-gearing at the top of my list.
i think you missed that i had to program for smaller then what I have and thats why i am wondering if i have taller gears cause of that. I know 315 isnt that big of a jump but going to 36's or 37's I will have to re-gear. I just dont want to find out during install later down the road that I wasited money cause having to program smaller tires then my 315s was a sign of different gears the my rpo code says. Ya know what im trying to say heh.
Disclaimer:
Dey see me Trollin' Dey hatin' for trollin dey trying to catch me ridin dirty.
