GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19

GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19

GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
GMC Sierra 3500 HD Tonneau Cover - Undercover - Elite LX - Brownstone - `15-`19
Product Information
 price
$1,999.99
$2,399.99 Save: $400.00

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UC1148L-GWX

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GMC Sierra 3500 HD Tonneau Cover - UnderCover Elite LX - Brownstone (2015–2019). A paint-to-match hard tonneau precisely built for Sierra 3500 HD 6 ft 6 in beds, finished in OEM Brownstone GWX (WA105V).

Made from lightweight ABS composite, the Elite LX blends durability with everyday utility. Its premium carpet-lined underside provides a refined interior look, while the full perimeter seal helps protect cargo from the elements. Custom-engineered contours provide a precise fit, and quick-release hardware allows easy removal when full bed space is needed. A removable LED light offers practical illumination for loading after dark.

Features

  • Paint-to-match Brownstone GWX (WA105V)
  • Fits 2015–2019 Sierra 3500 HD, 6 ft 6 in bed
  • Lightweight ABS composite construction
  • Premium carpet-lined underside
  • Full perimeter seal
  • Quick-release, easy removal
  • Removable LED bed light
  • Custom engineered fit

Have questions or want to confirm bed length and compatibility? Call us at 512-982-9393 (TX) or 562-981-6800 (CA). We offer installation and customization at our Austin, Texas and Los Angeles, California area locations.

Thinking about purchasing multiple items? Contact us for potential shipping discounts. We install on premises at both locations.

Disclaimer: Some images in our product listings that are provided by the manufacturer/ supplier are for illustration purposes only and may not be an exact representation of the item. The product listing details are accurate for the item offered. Please refer to the product description for precise specification and as always do not be hesitant to reach out to us with any questions.



CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

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Two locations to serve you

AUSTIN, TX

22108 SH 71 W.
Spicewood, TX 78669
512-982-9393
Mon-Fri: 9 AM - 6PM CST
Sat-Sun: Closed

LOS ANGELES, CA

2716 Dawson Ave.
Signal Hill, CA 90755
562-981-6800
Mon-Fri: 9 AM - 6PM PST
Sat-Sun: Closed