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Front Diff Drop Kit for 2021 GMC Sierra 1500 Denali


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Hi All,

Newbie here in the forum..

 

Vehicle: 2021 GMC Sierra 1500 Denali

 

I took the truck to the shop for 3.5 inch lift, earlier.

The guy who works there said if I lift my truck, GMC is going to void my entire warranty.

I wonder if this is normal?

I was also told that most of the lifted trucks have transmission oil leaking issues, so I will need to install a front differential drop kit.

Does GMC has such issue for only 3.5 lift?

 

Thank you guys in advance!

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A front diff drop is to keep the cv axle angle similar to stock. While doing this it actually increases the front driveshaft angle at the transfer case. The transfer case will still be at the same level. If a tranny was to leak due to driveshaft angle it would be the tranny tailshaft seal that would leak.

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