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2023 Sierra Denali HD Shows Production Grille

Earlier this morning, GM Authority brought you spy shots of the upcoming 2023 Silverado HD, which was recently caught testing with less camouflage, revealing the truck’s front grille. Now, we’re back at it to bring you an update on the Silverado HD’s corporate cousin, the Sierra HD. Specifically, the 2023 Sierra Denali HD and its front grille.

This particular 2023 Sierra Denali HD is the 3500HD model, rocking a dual-rear-wheel configuration and, ironically enough, towing another GMC Sierra 3500HD dually on its trailer.

Up front, the 2023 Sierra Denali HD will incorporate a revised front fascia with a simplified design for the grille. As we can now see, the grille now sports a flat bottom, deleting the current model’s tab-like lower corners while integrating the already-familiar horizontal slats. The new look appears to offer some continuity with the upcoming fully refreshed 2022 GMC Sierra 1500, set for a reveal later this week on Thursday, October 21st.

A prototype of the refreshed 2023 GMC Sierra 3500HD Dual Rear Wheel (dually)

2020-2021 GMC Sierra 3500HD dually

This particular 2023 Sierra Denali HD prototype is also equipped with placeholder headlights, but the production units are expected to feature bright LED signatures and projector beams for a more modern aesthetic.

Like the 2023 Silverado HD, the 2023 Sierra HD and 2023 Sierra Denali HD are expected a power boost, as originally reported by GM Authority. More specifically, the heavy-duty pickup’s 6.6L V8 L5P turbodiesel Duramax engine is expected to throw down with a heady 505 horsepower and 1,085 pound-feet of torque, a sizable improvement over the current mode’s 445 horsepower and 910 pound-feet of torque.

What’s more, the naturally aspirated 6.6L V8 L8T gasoline engine will ditch the current six-speed automatic transmission in favor of the GM 10-speed automatic transmission.

Although the fully refreshed 2022 GMC Sierra 1500 will be revealed later this week, the 2023 Sierra HD and 2023 Sierra Denali HD are expected to debut later next year. That said, the debut and launch timeframe could still be subject to delays as a result of the ongoing microchip shortage and other supply chain disruptions.

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Jonathan is an automotive journalist based out of Southern California. He loves anything and everything on four wheels.

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Comments

  1. Looks like a bigger/different camera thing behind the mirror. Are the HDs finally going to get the more advanced driver assistance tech?

    Reply
    1. Hope so. Not offering that feature on the 2500 has kept me on the sidelines.

      Reply
  2. Is the L8T getting the ‘Allison’ 10 speed?

    Reply
    1. My question exactly. They may give the gas V8 the “Allison” to hurry up and get a 10 speed in there and also to simplify the HD trucks so the only MAJOR difference is the engine itself, with the gas engine just getting smaller versions of the same stuff. Can only wonder what’s gonna happen to the vans powertrain wise, but I feel like they are going to get the 2.7 and 3.0 to go along with the 6.6 gas after the new Colorado debuts.

      Reply
    2. Wonder if the 10 speed is used on this cycle, they’ll still not give a rear end gear ratio choice?? Believe I can be satisfied with a 3.73 and a 10 speed, but if towing really heavy, the 4.10 might be a nice bet, even with a 10 speed.

      Reply
    3. Yes it is and it will become standard even for the Base Trim HD.

      Reply
  3. Hope the grill is more squared off on the gmc and the interiors improved so it can compete with ram and Ford. The interior is okay now but it could be better.🙂 Can’t wait to see what the new Silverado HD’s look like. Not much of a fan of Chevrolet across the front end. They need to go back to the bow tie on all trim levels with more interior color options too.

    Reply
  4. Is the 6.6 L8T getting a bump in power too by chance?

    Reply

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