Ultra-Tough Hard Folding Tonneau Cover for GMC Sierra 1500

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  • Low-profile design
  • DiamondSHIELD® Finish
  • 2/3 bed access when folded
  • 3-year warranty
  • Weather resistant EPDM seals
  • Supports up to 400 lbs (evenly distributed)
  • Make & model specific fit
  • Lifetime support
  • Lightning fast cargo access
  • Install in under 20 mins
  • Weather resistant Q-seals
  • Flips up for full bed access
  • Quick and easy installation
  • Lifetime warranty

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Regular price $19.99
$19.99
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Lifetime Support

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Free Same Day Shipping

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Order by 12 PM ET for same-day shipping! After the deadline? Your order ships first thing next business day. Enjoy fast, seamless shopping with us. Satisfaction and prompt delivery guaranteed. Don't wait – BUY NOW for quick shipping!

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USA Manufacturing

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Worksport has a state-of-the-art manufacturing facility where is produces all its AL3 Pro hard covers and is gearing up to produce our revolutionary new soft covers.

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Available Local Experts

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At Worksport, we’re committed to providing the best experience possible. That’s why we chose to have our dedicated Customer Service teams located in the USA and Canada. We believe that having representatives that understand what you are going through is key to customer satisfaction.

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Money Back Guarantee

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At Worksport, we're dedicated to ensuring 100% customer satisfaction. Our support teams are committed to going above and beyond to make sure you're happy with your purchase. If you’re not satisfied with your purchase or the level of service received after contacting us, then we’ll provide you with a full refund. This commitment demonstrates how much we believe in our ability to meet your needs and fix any problem.
*Some conditions apply please click HERE for more details on Worksport’s 30-Day Money Back Guarantee

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Lifetime Support

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We stand by our products and will address any issues or questions that come up for the entire time you own a Worksport tonneau cover or energy system. When you buy a Worksport product, you’re not just buying a truck accessory, you’re getting a partner from the moment you click buy.

AL3 Pro is an extremely durable and tough hard folding tonneau

The AL3 Pro, is Worksport’s first low profile hard trifold tonneau cover. Designed with our customers in mind, this hard truck bed cover showcases the best of American engineering and craftsmanship. The AL3 Pro is made using high-quality material that is more than 90% sourced in America and uses ultra-thick formed aluminum that provides superior dent resistance compared to other hard covers.

DiamondShield Finish

Worksport’s proprietary ceramic paint formulation offers superior scratch & dent resistance while looking as good as it performs.

Low Profile and Sleek

AL3 Pro is a hard folding tonneau cover that is low profile and looks amazing. Mounted right onto your truck bed, its easily installed in under 10 minutes with no drilling and only basic hand tools.

Tough and Lightweight

AL3 Pro is an extremely durable and tough hard folding tonneau cover that uses ultra thick all metal formed panels it provides enhanced dent resistance while making the cover light weight.

Easy and Quick Cargo Access

The AL3 cover is easy to operate using our cable operated quick latch system. Accessing your cargo is effortless — whether you're in a rush to cover your gear before a storm hits, or just loading up for the day.

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Based on 726 reviews
88%
(641)
10%
(71)
2%
(11)
0%
(3)
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(0)
Great Cover!

Great cover and easy install! Highly recommend the AL3 for ANY Chevrolet truck!

G
Worksport AL4 Flip-Up Hard Tonneau Cover
Great cover only took about an hour not bad for 60 year old by self
Very easy

Very easy to put on

Al3 Bed Cover

Tried a few different braands in the past, on tundras, this one fit the best out of the box and is way lighter than the competitiors. Needed latches for the middle section and they sent them wihtout charge in just a few days. Easy to install and looks really good. Is pretty secure for our summer trips to the lake.

My first Tonneau Cover

I did a ton of on-line research and read many reviews before making my choice. I could not be happier with my WorkSport AL3 Tonneau cover. It was a breeze to install and makes my 2025 Toyota Tundra Limited really stand out. I love the tri-fold, latch open, and security of the cover and the rigorous testing videos on their website. I feel confident I made the proper decision. It was also packaged very well...zero damage.

Great Cover

The AL4 is a very nice bed cover. I put one on my '24 F150 (6.6" bed) and so far so good with the look and performance. It is very well made. While the installation was actually quite simple, I have to admit I was a bit frustrated with the instructions at first as found them a bit vague as to which direction things go here and there and how the parts are labeled, how the rails go together, and how they're actually installed. I found things a little confusing for a first-timer. (I'm guessing Worksport has different packaging for the different bed sizes.) I would suggest a QR code pointing to detailed video instructions for each package. Also, one of my shorter rails was configured improperly out of the box. It took me a few minutes to realize I could switch the latch strike and the coupler around to make it work. That same piece was also missing the rubber strip that goes along the bed rail, however, I contacted customer service and they sent out the rubber piece I needed immediately. I'm quite particular, so it took me a while to get all the latches set to my liking, but the process is rather simple. So despite the issues, I still give the cover and customer service at Worksport a 5 star rating.

SC3

Easy to install and works great.

Very Satisfied!

I placed my order Thursday morning. I received my AL3 on Saturday via FedEx! The product was well packaged. Installation was easy. After some minor adjustments, the latches were snug and the cover feels very sturdy. Easy to open and fold, I’m happy I chose Worksport. On top of the sale, I was able to receive a military discount.

Solid build, easy install, waterproof and looks sharp. Couldnt be happier.

Perfect!

Just installed. Easy. Glad i chose AL3 over AL4. 2025 Ford Maverick. If i need 100% open it is easy to uninstall. solid feeling with the 3 lip face seals.

Excellent Product and Delivery

Best hard cover I have owned. It was delivered in three days.

AL3

Very happy with product. Easy to install when following instructions to the “t”(measurements for rear latch). Like the lightweight of the product. Looks clean. First thing I did was put a nice protective coat on it si it doesn’t fade.

Yes

If your thinking about buying a Cover, this is the one.

Absolutely, love it. It took me 10 minutes to put it on, big storm, rolled in and no water in my bed of my truck. Would highly recommend this to anybody looking for a cover for their truck?

AL3 for 2018 F-150

Great product! I am so pleased with the quality of this trifold tonneau. Installation was not challenging and the added security is a definite plus. Also, I feel that the price was very good considering the quality of the product. 👍👍👍👍

Easy setup and nice

I have to say I'm very satisfied and it looks very nice on my truck. It took me maybe 30 minutes to install. I now have a high sense of security leaving my valuables in the bed. My only issue and you may have a fix for this is the forward clamps get loose, I had to retighten to clamps during my trip. Thinking of using lock washers to keep them from getting loose.

Worth every dollar

My expectations were not high for the price. But I am extremely happy with the quality, the ease of installation, and the weather tight seal. It took 20 minutes to install by myself. After a few days I checked the clamps and snugged them up. Water tight bed now. I highly recommend this cover. I don’t need a hard cover and for the price I won’t be devastated if it gets damaged. I’ve bragged to my friends and family of the quality and performance.

Made in USA!!!

I have had about 10 different bed covers from all the different brands, and the Worksport AL4 is absolutely hands down the best. Came packaged very well and nothing missing. You won’t regret buying this cover.

2025 gmc canyon

Very easy and simple to install, has a very clean look, fit my truck like a glove, my only thing I didn’t care for was its pretty flimsy, but all in all it’s a good unit!

Pretty Good

AL3 Hard Folding Tonneau Cover via Worksport

Product looks great , price was good , install not hard but I’ve had it for almost a year and on day one leaks from the seams where it folds up and down.

Not crazy , but enough where wouldn’t feel comfortable putting things in there that can’t get wet.

Excellent Product

I recently ordered at AL3 Hard Folding Tonneau Cover via Worksport.com. The price was great and I received my Military Discount via GOVx. The product arrived within 24 hours. Installation was quick and easy. The Cover fit perfectly on my 2025 Nissan Frontier w/6’ bed. Highly recommended this product and Company. The customer service is outstanding also. Thanks

Nice bed cover

Cover fit perfectly and was easy to install small stickies to cover depressions in bed rail fit good, but were difficult to remove from sheet.

Love it so far

Packaging was excellent installation a little under an hour took it to a car wash and had some water come in from the top of the tailgate

Very pleased

I have had my TC on now for 2 months.
Pros - Lightweight but very durable
My son in law helped me put it on my 2024 Ford XLT, after we finished in app., 35 minutes, I think I could have done it myself (68) years old, so these were made for DIY which saves about $300.
Worksport TC’s are to me as good as the brand I used to have on a previous truck but $600 less expensive. The latching system is very good and easy. My cover is a tri fold, but it does not fold up against the cab( which means, last section doesn’t fold), which I had before on another truck but never actually used that feature. Another thing I really like about the cover is that I have driven it on the road twice in heavy rain and found zero water in the bed. That was impressive. Very low profile. I didn’t need to purchase any extra items to put the cover on, everything in the box was enough.
Cons- none in two months. My hope is that the cover will not fade which I do not expect it to do.

Looks great works great

Receive The package and the box was damaged on outside But because of how well it is packaged absolutely No damage at all.. Unpackaged it And installed it myself took less than an hour. It looks great and operates great seems to be sturdier than what the videos actually showed. I'm very impressed so far. I've done alot of research before I decided on what to purchase, so because this company's American made and the durability test videos that I've seen is why I chose the AL4

Great USA Made Cover!

Did quite a bit of research/reading reviews online about this cover as well as several other competing brands, and am so glad I ordered the AL4 for my 2025 Ford Maverick. I think it looks great and it fits perfectly.

Install took about 1 hour. Directions were a bit confusing, but it’s not hard to figure out. Watched the install video posted on this site and he put down weatherstripping on his bulkhead that was included with his order. I had no weatherstripping inside my shipping box even though the instructions mention applying weatherstripping to the bulkhead, but it’s also not listed on the packing list on the instructions, so I don’t know if they forgot to include it, or it’s been discontinued- I ended up going to Lowe’s and purchasing some because my bulkhead is slightly lower than the side rails and I’m wanting to keep water out.

The cover and hardware are substantial, and seem very well built - I anticipate it will hold up well over the coming years.

Lastly, the way it’s packaged inside the shipping box is impressive. They use lots of cardboard and bubble wrap and some foam sheeting - you can be confident it will arrive in good shape.

Need More Help?

If you are having any issues or require additional help with your AL3 Pro tonneau cover then please call our customer service teams located in Canada and US. We have trained professionals ready to assist you right away.

Worksport Customer Service is available Monday - Friday, 9:00am - 5:00pm ET. If you cannot reach someone right away please use our form. It is also possible to send an email, a message through our chat or leave a voice mail.

Size Does Matter

Double-check that you have the correct size.

Click the adjacent diagram for details. Measure your truck's bed interior in inches, form the cab to the tailgate.

Match your measurements to available tonneau covers found on the Worksport website. Please ensure that the truck year, make, model and trim of your selected truck bed cover match your own vehicle. If they do not, please do not hesitate to contact our customer support teams to help you make the correct decision.

*Note: Return shipping generally will not be covered by Worksport if the wrong product was selected or incorrect measurements were used to determine your truck bed size. If there is an issue please contact us right away and the issue will be addressed on a case by case basis**

How to measure your truck: Hold tape against inside edge of box; Measure inside of box to inside of tailgate; Read Tape Dimension at inside edge of tailgate

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