Shipping was quick communication was prompt when addressed. Excellent service.
Darin D. Verified buyer
Store review TRACKED DELIVERY
Free shipping
Product Details
The UnderCover SE hard-shell tonneau cover fits the 6-foot 6-inch bed of 2014-2019 GMC Sierra 1500. The maker lists light weight, ease of removal, security and weather protection as its main points.
Part number: UC1146
A tonneau cover closes over the open cargo box of a pickup truck to hide and shelter what is carried inside; depending on the design it rolls, folds, retracts or lifts open for access.
Listed for 1 vehicle: the fitment table on this page shows each year, make and model it fits.
UnderCover tonneau cover.
Use the vehicle selector to confirm your exact year, cab and bed.
Confirm this fits your vehicle. Use the “Check Fit” selector, or see the Vehicle Compatibility list below for the years, makes and models listed.
Specifications
Manufacturer data for this part — all visible, no tabs to dig through.
| Brand | UnderCover |
| Part number | UC1146 |
| Shipping carton | 86 × 78 × 5 in (218 × 198 × 13 cm) |
| Shipping weight | 40.8 kg (90 lb) |
| Category | Truck Bed & Tonneau |
Related guides
GMC Sierra Tonneau Cover Guide: Folding, Roll-Up or RetractableA GMC Sierra tonneau cover guide organised by how the cover opens, after the four Sierra details that rule covers in or out: model, CarbonPro and M...Do You Need a Bed Liner Under a Tonneau Cover?A tonneau cover keeps weather off your cargo but not your cargo off the bed. Here is when you need a mat or liner underneath, and how to check that...Tonneau Covers in Canada: How to ChooseHow soft roll-up, folding, hard folding and retractable tonneau covers differ, what to check on your bed first, and examples from TruXedo, Extang, ...
All guides →
UnderCover Tonneau Cover — 2014-2019 GM...
UC1146
Complete the build
More parts for the 2015-2019 GMC Sierra 2500/3500 HD. Untick anything you don’t need.
$2,099.99
$668.99
$747.94
Total for all 3
$3,516.92
More from UnderCover
More in UnderCover.
Free shipping
Free shipping
Free shipping
Free shipping
Free shipping
Free shippingMore for the GMC Sierra 1500 Limited
- Enthuze C-Series Hard Folding Flush-Mount Tonneau Cover — 2014-2018 Chevrolet Silverado...
- Retrax Retractable Tonneau Cover — 2014-2019 GM Full-Size Pickups (60462)
- TruXedo TruXport Soft Roll-Up Tonneau Cover — 6'6" Bed — 2014-2018 GMC Sierra / Chevrol...
- TruXedo Tonneau Cover — 2014-2019 Chevy Silverado 1500 / GMC Sierra 1500 (1271816)
- TruXedo Tonneau Cover Soft Rolling LoPro (572701) — 2016-2019 GMC Sierra 3500
- UnderCover Tonneau Cover — 6'6" Bed — 2014-2019 Chevy Silverado 1500 & 2015-2019 Chevy ...
- Extang Folding Tonneau Cover — 2014-2018 Chevy Silverado 1500 (90450)
- Enthuze Soft Tri-Fold Tonneau Cover, 6'7" Bed — 2014-2018 Chevrolet Silverado & GMC Sie...
All Truck Bed Covers & Tonneau Covers for the GMC Sierra 1500 2014–2018 →All parts for the GMC Sierra 1500 →
Reviews
From MapleTorque customers
What customers say about MapleTorque
Awesome Send an email get reply very promptly... Send an other email weekend time ... Also get reply immediately... Alex take care of the customer to make sure everything going good during the transaction... #1 2026 Keep continu...
Eric L. Verified buyer
Store reviewQuick shipping and very smooth transaction and I will certainly be checking here for future needs
Anonymous Verified buyer
Store review