2021 GMC Yukon XL Denali To Use GM’s New T1 Platform

A prototype of the upcoming 2021 GMC Yukon XL Denali has been spied while testing by our spy photographers.

Admittedly, the prototype in question is bathed in camouflage and, thus, it is difficult to discern all the areas that have been altered from the outgoing model.

That being said, it does appear as though this test car is equipped with the front grille that will adorn the finished item and looks somewhat similar in design to the current Sierra Denali. A number of other design changes, which inevitably are present, aren’t visible through the camo.

Also Read: GMC Yukon Gains Two 2019 Graphite Edition Versions

Sitting beneath the skin of the new Yukon XL Denali, as well as lesser versions, will be the GM T1 platform utilized by pickup trucks and body-on-frame SUVs. This architecture is currently used by the 2019 Chevrolet Silverado and 2019 GMC Sierra and replaces the old K2. It will eventually underpin other GM products as well, such as the Chevrolet Tahoe and Suburban as well as the next-generation Cadillac Escalade.

It remains to be seen what engines GM will offer with the updated Yukon range, but the T1 platform offers support for a series of 4.3, 5.3 and 6.2-liter petrol engines with six and eight cylinders. Additionally, it supports various Duramax turbo diesels.

Finally, the new underpinnings will also allow GM’s designers to create a brand new interior, which should be more modern and feature the latest tech, such as a new infotainment and various luxury and safety systems.

more photos...

Photo credits: S. Baldauf/SB-Medien for Carscoops

  • HaltestelleLuitpolthafen

    That IRS looks like a complete and total afterthought or they cheaped out on the design.

    Why does that stamped steel carrier/assembly hang so far down in the center? It hangs down almost as far as those control arms. That’s going to hang up on everything when off road.

    • krusshall

      How dare they not use a portal style axle and inboard brakes. How else will all these moms make it out their treacherous driveways and through the potholed streets and highways. What an oversight.

      • HaltestelleLuitpolthafen

        IRS is not a new or cutting edge suspension design.

        All I’m saying is other manufacturers have had a more elegant solution that doesn’t look like such an afterthought.

      • Ben

        I see we have a fellow Hummer fan!

    • krusshall

      The center differential carrier is likely not much lower than the bottom of the differential on a live axle. What is low is where the shock absorbers connect to the lower control arm. Ford’s IRS looks similar so likely it’s a design limitation for maximizing wheel travel AND maximizing interior space over the rear suspension.

  • please, GMC for the love of all that is good, center your logo int he grill this time around!!!

    and even though it would be a perfectly adequate base engine i kind of doubt the V6 will go anywhere near the fullsize SUVs… they didn’t throw the I6 or V6 in the GMT900 or K1 even though the market would like that. especially after the Trailblazer went away as GM’s smaller/cheaper real SUV

  • iggination

    I’ve said this before, and I’ll say it again because it looks even worse on this. The IRS looks SO DAMN CHEAP!!! And are those really halogen lights??

    • FordMopar

      What makes you think it’ll have halogen lights? It does not show it in the pics. HID projector lens or LED headlights is my best bet.

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