Cost to regear 2500HD to 4.10

[Frozen001]

My 2012 truck has the 3.73 axle ratio. I want to step it up to the 4.10 to make my towing experience better, basically I want it to actually hit 6th gear towing my 6500lbs travel trailer. Anyone have an idea of what this would cost, and how this will effect my warranty? ( Got the truck certified used, so I have a bit less than 1 year remaining on the factory and another two for the certified used). Also would I be better off having a dealer do this or try to find a shop. I know the truck will need to be reprogrammed so that will have to be done at the dealer.

[gmtech4]

couple grand ,,,warranty MAY be ok ,,,talk to a service manager about it

[8.1HD/ALLISON]

Why you wanting it to hit 6th? Towing that I would think to use tow haul and keep from kicking into overdrive. Not to mention you will lose mpg when not towing. Major expense to gain minor mpg.

 

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[txab]

Don't forget you'll be doing both diffs, more $$$$

[KMGZ400]

Paying to regear to 3.73 to 4.10 dosent seem to be worth it to me.. Not enough of a difference in ratio. You'd be better off putting the money on a down payment towards a duramax