Quick answer
Most Silverado HD and Sierra HD owners start with floor liners, side steps and bed protection, then add a leveling kit, a tonneau cover or toolbox and towing gear. The 2020 model year started a new generation, so parts for 2015–2019 trucks usually won't fit newer ones.
Know your HD truck
- Generation: 2020 and newer is the current generation; 2015–2019 trucks use different body parts.
- Silverado vs Sierra: cab, bed and many suspension parts are shared, but grilles, bumpers, headlights and some trim parts differ.
- Cab: Regular Cab, Double Cab or Crew Cab.
- Bed: standard bed (about 6.75 ft) or long bed (about 8 ft).
- 2500 vs 3500, SRW vs DRW: dually 3500s use different fender flares and some steps.
- Gas or Duramax diesel: exhaust and some kits are engine-specific.
Shop by year
Silverado 2500 HD: 2020 · 2021 · 2022 · 2023 · 2024 · 2025 · 2026
Silverado 3500 HD: 2020 · 2021 · 2022 · 2023 · 2024 · 2025 · 2026
Sierra 2500 HD: 2020 · 2021 · 2022 · 2023 · 2024 · 2025 · 2026
Sierra 3500 HD: 2020 · 2021 · 2022 · 2023 · 2024 · 2025 · 2026
You can also select your truck in the vehicle bar on any page.
1. Floor liners and steps
Shop floor liners and running boards or nerf bars after selecting your truck. See running boards vs nerf bars vs hoop steps.
2. Leveling kits and shocks
HD trucks sit lower in front from the factory. A leveling kit evens the stance; pair a lift with matched shocks. Read do I need an alignment after a leveling kit.
3. Bed covers, mats and toolboxes
Shop tonneau covers, bed mats and toolboxes by bed length.
4. Towing
For fifth wheels and goosenecks, read fifth wheel vs gooseneck and shop hitches, towing mirrors and air helper springs. Always stay within your truck's rated towing and payload limits.
Not sure what fits? Contact us with your year, cab and bed and we'll help confirm fitment before you order. More guides: Truck Buying Guides.
Frequently asked questions
Do Silverado HD and Sierra HD parts interchange?
Many bed, cab, interior and suspension parts are shared, but front-end parts like grilles, bumpers and headlights usually differ. Check each product's fitment.
Do 2019 Silverado HD parts fit a 2020?
Usually not. 2020 started a new generation of Silverado HD and Sierra HD. Select your exact year.