Yukon Gear Dura Grip Positraction for 2014+ GM 9.5in & 9.76in w/ 3.42 & Up Gear Ratios
If your 2014-or-newer Silverado 1500, Sierra 1500, Tahoe, Suburban, Escalade or Express 2500 spins one rear tire on a wet ramp or a snowy hill, or the factory locking differential has failed, this is a drop-in clutch posi for the rear axle those trucks share. The Yukon Dura Grip YDGGM9.5-4-33-12B fits the 2014-up GM 9.5 and 9.76 inch rears with the 12-bolt cover, 33-spline axles and gear ratios of 3.42 and numerically higher.
It is a limited slip with composite clutch packs and forged 4320 chromoly spider gears. Spring preload keeps the clutches lightly engaged, so in a straight line the axle shafts are tied together and a slipping tire hands torque to the other side. In a turn the clutches let the outside wheel run faster. That makes it a different animal from the factory G80 locker many of these trucks came with, which stays open until a speed difference trips its governor and then locks hard. The Dura Grip works all the time and engages smoothly, which many owners prefer for towing and wet roads. Yukon says the gears are cut for the strongest teeth possible.
First confirm it is the 2014-up 12-bolt-cover axle, not the earlier 9.5 with a 14-bolt cover; 2014-up GM used both 9.5 and 9.76 ring gears in this housing, the 9.76 mainly behind the 6.2L. Both take this unit. Next, check the RPO axle code or ring gear for the ratio: this case is for 3.42 and up, so a truck with lower gears needs a different carrier. Last, if the truck has a G80, figure out whether the locker itself failed before you buy; our G80 problems guide and 9.5/9.76 rear axle guide walk through it.
Yukon's application list includes 2014-2026 Silverado 1500 and Sierra 1500, 2015-2020 Tahoe, Suburban, Escalade and Escalade ESV, 2014-2026 Express and Savana 2500, and 2014 Savana 1500, all with the 12-bolt-cover 9.5 or 9.76 rear and 3.42-and-up gears. Options and axles vary within a model year, so check your rear axle code and ratio, or send us your year and VIN. For the earlier 14-bolt-cover 9.5 use the Dura Grip for older GM 9.5. A gear-type option for these axles is the Eaton Truetrac 917A732. Everything else is in hard parts.
| Brand | Yukon Gear & Axle |
| Part number | YDGGM9.5-4-33-12B |
| Fits | Yukon Gear Dura Grip Positraction for 2014+ GM 9.5in & 9.76in w/ 3.42 & Up Gear Ratios |
| Type | Differentials |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. YDGGM9.5-4-33-12B is for the 2014-and-up axle with the 12-bolt cover. Earlier 9.5 inch axles with the 14-bolt cover take a different Dura Grip.
No. This case is for 3.42 and numerically higher ratios. Lower ratios use a different carrier series, so check your axle code or ring gear first.
Yes. Yukon lists it for both the 2014-up GM 9.5 and 9.76 inch rears with 33-spline axles and the 12-bolt cover.
Yes, it replaces the whole carrier, G80 or open. It works differently: a clutch posi that engages smoothly all the time instead of locking when a speed difference trips.
Yukon recommends a high grade non-synthetic GL-5 gear oil plus Yukon LSD additive. Synthetic oil is not recommended and may make it aggressive or noisy.
If the carrier bearings are original and high mileage, or you are changing gears, replace them. A 2014-up 9.5 12-bolt master overhaul kit covers the bearings, races and seals.
