How can I tell if I have 3.42 or 3.73?
Moderator: F9K9
How can I tell if I have 3.42 or 3.73?
I have a 2003 Sonoma Crew Cab ZR5 and want to know how to identify what ratio my Rear Axle is set at. I've only had the truck for 2 weeks and I'm just trying to get to know her a little better.
- HenryJ
- Admin K Elite
- Posts: 12706
- Joined: Tue Oct 01, 2002 9:14 pm
- Location: Ontario, Oregon
- Contact:
Re: How can I tell if I have 3.42 or 3.73?
Check out this thread: Deciphering the RPO glovebox codesCrazyZR5 wrote:... want to know how to identify what ratio my Rear Axle is set ... I'm just trying to get to know her a little better.
Should give you all the information about your truck

"Speed doesn't kill, suddenly becoming stationary does." - Richard Hammond
"Speed is just a matter of Money - How fast do YOU want to go?"-Mechanic from Mad Max-
If at first you don't succeed - Don't take up Skydiving! - ThunderII KE7CSK
- HenryJ
- Admin K Elite
- Posts: 12706
- Joined: Tue Oct 01, 2002 9:14 pm
- Location: Ontario, Oregon
- Contact:
As far as I know it is for any GM product .Justin wrote:does that code pertain to gmc sonoma's as well?
So I would say, Yes. Though the identification plate will have the letter designation for GMC.
"Speed doesn't kill, suddenly becoming stationary does." - Richard Hammond
"Speed is just a matter of Money - How fast do YOU want to go?"-Mechanic from Mad Max-
If at first you don't succeed - Don't take up Skydiving! - ThunderII KE7CSK