The GMT800 (1999–2006) Sierra/Silverado has a well-designed floor plan that works great with most aftermarket floor mats. Here are your best options.
Floor Mat Priorities for GMT800
These trucks are workhorses — most need mats that can handle dirt, mud, snow, and spilled coffee on a regular basis. Factory carpet mats wear out fast and are difficult to clean.
Option 1: WeatherTech Floor Liners (Best Overall)
WeatherTech makes custom-fit laser-measured floor liners for GMT800 models. They’re vacuum-formed to fit the floor contours exactly, contain liquids completely, and have a raised lip to prevent spillage.
While WeatherTech products require ordering through their website by year/make/model, they’re available on Amazon as well.
Option 2: Husky Liners Weatherbeater
The Husky Liners Weatherbeater set is an excellent alternative at a slightly lower price point. They provide full floor coverage and deep channels for liquid containment.
Option 3: FH Group Heavy-Duty Rubber Mats
For work trucks, simple heavy-duty rubber mats from FH Group or similar brands provide the basics at the lowest cost. Easy to pull out and hose down.
Recommendation:
Daily driver → WeatherTech or Husky Liners
Work hauler → Heavy rubber mats or Husky Liners
Show/weekend truck → Color-matched loop carpet cut to fit
What’s your GMT800 used for primarily?