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All The 2025 GMC Sierra HD Grilles Compared

The 2025 GMC Sierra HD arrives as the fourth-generation pickup’s sixth model year, introducing a few small updates compared to the refreshed 2024 GMC Sierra HD. As was the case previously, customers once again have a variety of trims to choose from, each of which presents its own unique styling characteristics. Now, we’re taking a closer look at all of the 2025 GMC Sierra HD grilles in the following GM Authority comparison.

The exterior of the GMC Sierra HD, including one of the GMC Sierra HD grilles.

In total, there are three basic designs for the 2025 Sierra HD grilles, plus six different finishes:

  • Design 1: Pro, SLE, SLT
  • Design 2: AT4, AT4X, AT4X AEV Edition
  • Design 3: Denali, Denali Ultimate

To note, SLE and SLT trims offer the same finish, while AT4X and AT4X AEV Edition variants also offer the same finish.

Let’s start with the bottom three trims, namely the 2025 GMC Sierra HD Pro, SLE, and SLT. On Pro trims, the grille includes a chrome finish with flat black grille insert bars, while SLE and SLT trims include a chrome surround with chrome insert bars.

Moving up the trim level ladder, we have the off-roaders of the bunch, namely the 2025 GMC Sierra AT4, AT4X, and AT4X AEV Edition. All three of these trims incorporate a gloss black header and grille insert bars, while the AT4 incorporates black chrome accents, and AT4X and AT4X AEV Edition variants incorporate Dark Nickel accents.

Denali

Denali Ultimate

Finally, we have the range-toppers. The 2025 GMC Sierra HD Denali includes a signature chrome grille, while the Denali Ultimate upgrades with Vader Chrome and a High Gloss Black surround.

Check out the table below for a side-by-side breakdown of the 2025 GMC Sierra HD grilles:

2025 GMC Sierra HD Grille Comparison
Trim Level Description
Pro Chrome with flat black grille insert bars
SLE Chrome surround with Chrome insert bars
SLT Chrome surround with Chrome insert bars
AT4 Gloss Black header and grille insert bars with Black Chrome accents
AT4X Gloss Black header and grille insert bars with Dark Nickel accents
AT4X AEV Edition Gloss Black header and grille insert bars with Dark Nickel accents
Denali Signature Chrome Denali grille
Denali Ultimate Signature Denali Ultimate grille in Vader Chrome with High Gloss Black surround

As a reminder, the 2025 GMC Sierra HD offers two powertrain options, including the naturally aspirated 6.6L V8 L8T gasoline engine, as well as the 6.6L V8 L5P turbodiesel Duramax engine. Under the skin, the Sierra HD rides on a more-capable variant of the GM T1 platform, while vehicle production takes place at the GM Flint plant in Michigan.

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

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