Seat Covers — Price Comparison

Seat Covers for 2021 GMC Sierra 3500HD

Seat covers protect the original upholstery in a 2021 GMC Sierra 3500HD from kids, dogs, job sites, and sun fade — and preserved seats are one of the most visible factors in resale condition. Custom-patterned covers follow your exact seat contours and airbag seams, while universal covers trade fit for price.

We compared 3 offers across major retailers for the T1XX platform (2019–2026 T1XX). Prices range from $45.99 to $189.99 as of the last update.

Best picks

• Best overall: A custom-fit neoprene or waterproof set patterned for your exact seats — they accommodate side airbags properly and don't shift underneath you.
• Best budget: Universal stretch-cloth covers. Fit is approximate around headrests and consoles, but they take the daily abuse for very little money.

What to look for

• Side-airbag compatibility is a safety requirement, not a feature — covers must have labeled airbag seams.
• Heated and ventilated seats need covers rated for them; thick padding blocks ventilation entirely.
• Confirm the cover set matches your seat layout — bucket, bench, and 60/40 splits all differ.

Truck-specific note: cab configuration and bed length change part fitment more than model year does. A crew cab with the short bed and an extended cab with the long bed are effectively different vehicles to parts catalogs — have your exact configuration handy when ordering.

Fitment note

Verified for 2021 GMC Sierra 3500HD (T1XX). Fits 2019–2026 T1XX generation unless trim-specific exclusions apply. Confirm trim and option codes before ordering.

Prices are affiliate-linked estimates. Confirm current pricing at the merchant before purchase.