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New GMC 2500hd 4x4 LLY Allison Extended Cab Loaded on the way!



Tires & Lift; 4" Lift? 3"? I want beefy tires & wheels but not radical, what size?



Also, will I have trouble with the warranty, and if I change the tire size. And will it affect gauges, computer... and so on.



Chip? do I really need one? whats the story?



Exhaust: Does the bigger exhaust increase performance or just make the truck louder?
 

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On tires you could run a 33 or 35 and that would look nice. As far as warranty you should talk to your service writer and tell them what you plan to do and see if they tell you anything, usually they will work with you on warranty stuff if you lift it. As far as gauges you can reset those with a programmer (predator, other) so that they will read correctly. Chips, that is up to you and how much you want to spend, how fast you want to go. They are helpful if pulling or just to increase HP & TRQ. On the last one, yes and yes. Good luck and welcome.


Ah side not, you have the LLY, may have to wait a while for programmers or chips to be available.
Edited by: GMC2500HD
 
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