Change Differential Ratio?

[flynaxos]

I have a 2003 Yukon XL 2500 4WD. I am interested in chnging my differentials from 3.73 to 4.10 to increase my towing capacity.

Has anyone done this? Any idea what the cost would be?

Thanks!

 

[blueflamed03]

to go from a 3.73 to a 4.10, you wont see 'huge' gains. Stock size tires I assume? For gears, and install, you could be looking $650-$1200...have you had the computer tuned yet? thats far less expensive, yet get's you HUGE results.

 

[AtomicHoe094]

+1 to Blues post. In fact i think id rather do an exhaust intake and tune before the gears.