GMC 3500 HD Tonneau Cover - Undercover - Elite LX - `15-`19
GMC 3500 HD Tonneau Cover - Undercover - Elite LX - `15-`19
Available Options
Drive now, Pay later with Affirm
or with PayPal
Both options will be available upon checkout.
GMC 3500 HD Tonneau Cover – UnderCover Elite LX (2015–2019) is a paint‑matched, hard one‑piece cover for the 6 ft 6 in bed. Built for OEM‑grade fit and daily utility.
The Elite LX uses a lightweight ABS composite panel custom engineered for a precise fit on your Sierra 3500 HD. A premium carpet‑lined underside and a full perimeter seal help protect cargo from weather and dust. Quick‑release hardware makes removal easy when you need full‑bed access, and the LED light is removable. Please verify 6 ft 6 in bed and year before ordering.
Features
- Paint‑matched finish (2015–2019, 6 ft 6 in bed)
- Lightweight ABS composite
- Precise, custom fit
- Carpet‑lined underside
- Full perimeter seal
- Quick‑release removal
- Removable LED light
Questions or fitment help? Call our Austin, TX team at 512-982-9393 or our Los Angeles, CA area team at 562-981-6800. We offer installation and customization at both locations.
Ordering multiple items? Contact us for shipping discounts. We install on premises at both locations.
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Need Assistance?
We're here to help!
Call us at 512-982-9393 (Austin, TX) or
562-981-6800 (Signal Hill, CA)
and get assistance from one of our sales team members!
Product ID Number: