Floor Mats & Liners — Price Comparison

Floor Mats & Liners for 2020 GMC Sierra 3500HD

Floor mats are the highest-wear interior part on a 2020 GMC Sierra 3500HD, and the gap between a custom-molded liner and a trim-to-fit universal mat shows up the first time you track in snow or spill coffee. Laser-measured liners lock into the factory anchor points and hold a raised lip around the footwell, while flat carpet mats prioritize OEM looks over containment.

We compared 8 offers across major retailers for the T1XX platform (2019–2026 T1XX). Prices range from $19.99 to $219.99 as of the last update.

Best picks

• Best overall: A custom-molded all-weather liner that uses the factory retention hooks — it stays put under the pedals and contains liquids instead of letting them reach the carpet.
• Best budget: A trim-to-fit TPE mat set. Coverage is less precise around the dead pedal and tunnel, but it protects the carpet for a fraction of the price.

What to look for

• Confirm the listing matches your cab or trim — crew vs extended cab and bucket vs bench layouts use different mat shapes.
• Driver-side retention matters most: mats without anchor hooks can creep toward the pedals.
• Raised-lip liners trap snow melt and spills; flat mats are easier to clean but only protect what they cover.

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 2020 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.