02 rear.

[justtruckn]

ok.. i got a 02 4X4 2500HD 5.9 gas auto 3.55 gears.(suck) any idea what rear i got? sticker is gone underhood. i got a dana 80 dually rear from a 01 3500 out here and want to swap the locker and gear set (4.10) into my truck

 

[16 Bighorn 4x4]

If it's a heavy GVW pickup it should have the Dana 70 in the rear.

Here are the Dana 70 rearend part numbers for 2001-2002: 606266, 606267, 606273, 606274, 606707, 606708

There should be a metal tag on two bolts of the diff cover to wipe off and find the numbers on it, unless someone removed it sometime prior.