Installation Time
(approx) 30 Minutes
Difficulty Level:
Simple installation for anyone.
Installation Guides
No guide available for this part yet.
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Features, Description, Q&A, Specs & Installation
Brand | UnderCover |
Tonneau Cover Type | Hard Folding |
Tonneau Cover Installation | Clamp On |
Tonneau Cover Locking | Locking with Tailgate Lock |
Toolbox Compatibility | Not Toolbox Compatible |
Tonneau Cover Fold Type | Hard Folding - Tri |
Solid Folding Construction. The UnderCover Select Hard Folding Tonneau Cover features three heavy‑duty aluminum panels connected with stainless steel hinges, delivering a rigid, durable structure designed to resist sagging, bending, and rattling over time—even under heavy loads or harsh driving conditions.
Quick Access And Secure Locking. This UnderCover Select Hard Folding Tonneau Cover's tri‑fold design allows rapid access to your truck bed—fully open, partially folded, or fully closed—while the integrated tailgate latch locks into the GMC tailgate for enhanced security and prevents unauthorized opening.
Weatherproof And Resilient. Rubber weather‑seal gaskets run along the rails and tailgate, effectively keeping rain, snow, and dust out. The UnderCover Select Hard Folding Tonneau Cover's under‑rail support system reinforces the rails, preventing flexing and improving sealing, making it reliable in diverse climates.
Installation. Putting this UnderCover Select Hard Folding Tonneau Cover on your Sierra 1500 takes 30 minutes to install.
Application. The UnderCover Select Hard Folding Tonneau Cover fits 2019-2025 Sierra 1500 models with 5.80-Foot Short & 6.50-Foot Standard Box.
UnderCover SL14020
SL14021
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation Info
Installation Time
(approx) 30 Minutes
Difficulty Level:
Simple installation for anyone.
Installation Guides
No guide available for this part yet.
What's in the Box
Tech Guides: