LOMAX STANCE Hard Folding Tonneau Cover for 2019-2026 Chevrolet Silverado 1500 / GMC Sierra 1500 (5'10" Bed, without CarbonPro bed / Urethane Aluminum)
For the 2019-2026 Chevrolet Silverado 1500 and GMC Sierra 1500, this STANCE in Urethane Aluminum clamps to the 5'10" (69.9") bed (GM's 5'8" box) and holds up to 400 lb spread evenly once it is closed. Water is shed off the panels and past a seal that runs the full length of each side rail, with no drains. Order part G3020079. Closed, the STANCE supports up to 400 lb spread evenly, latches at ten points without a key and rides less than 1/2" above the box. Raised, it is held off the rear window by steel pivot links tied to two anchors bonded on the cab roof, and while upright it blocks the third brake light. Agri-Cover backs every STANCE with a 3-year limited warranty.
The Urethane Aluminum STANCE wears LOMAX's black urethane with no surface pattern. Its 400 lb rating, upright storage and ten-point locking match the other two STANCE finishes.
What's Included:
(8) Clamps
(2) Anchors
Pre-folded cover assembly
Driver side rail
Passenger side rail
Alcohol pad
Primer
Black sealant
Some trucks also follow a platform-specific instruction sheet, linked under Resources for your truck.
Features
Stands Upright for Full Bed The RigidLink system holds the folded cover at about 90 degrees behind the cab, so the whole bed is open without taking the cover off. Its steel pivot links are powder coated and rubber bushed, which keeps the cover from touching the rear window and quiets it. In the upright position the cover blocks the third brake light.
Anchored to the Cab Roof The pivot links attach to two anchors that bond to the cab roof with adhesive after the surface is primed; the anchors, primer and an alcohol pad come in the box.
Rated for 400 lb Closed, the STANCE supports up to 400 lb spread evenly across its panels, and the cover weighs about 50 to 60 lb. Keep heavy loads off a single point.
Ten-Point Locking, No Key Unfolding each panel latches the cover at ten points, using heavy-duty reinforced nylon parts, so it locks without a key. One pull of the release cord from either side of the bed frees both latches, and the nylon latches engage with a 1/2" face.
Water-Shedding Hinges and Seals A water-shedding design, sealed hinges and an uninterrupted seal along both side rails send water off the cover, and there are no gutters or drains.
Bungees and Cushioned Brackets When the panels are folded, molded storage brackets with rubber-cushioned standoffs keep them spaced, and retractable bungees hold the cover in place.
Clamp-On, Low on the Box Eight TIGHT BITE clamps with cut teeth hold the side rails, so a standard install puts no holes in the box, and the closed cover sits less than 1/2" above it. Where a truck's own instruction sheet calls for drilling, the Installation tab for that part says so.
Fitment & Compatibility
Chevrolet
Years
Model
Bed
Notes
2019-2026
Silverado 1500
5'10"
with or without Multi-Flex/MultiPro tailgate; not for trucks with CarbonPro boxes or Bed Side Storage Boxes
GMC
Years
Model
Bed
Notes
2019-2026
Sierra 1500
5'10"
with or without Multi-Flex/MultiPro tailgate; not for trucks with CarbonPro boxes or Bed Side Storage Boxes
Fit guidance: Part G3020079 fits the 2019-2026 Chevrolet Silverado 1500 and GMC Sierra 1500 with the 5'10" (69.9") bed (GM's 5'8" box). Fit notes: with or without Multi-Flex/MultiPro tailgate; not for trucks with CarbonPro boxes or Bed Side Storage Boxes. New-body trucks only; the 2019 Silverado 1500 LD / Sierra 1500 Limited is not covered by this part. LOMAX builds each cover for one bed length, so measure your bed and check the notes for your truck before ordering.
Specifications
Brand: LOMAX
Style: Hard folding tonneau cover with upright storage
Finish: Urethane Aluminum (black urethane)
Load rating: Up to 400 lb, evenly distributed
Cover weight: About 50-60 lb
Profile: Less than 1/2" above the box
Open position: Upright at about 90 degrees behind the cab (RigidLink); blocks the third brake light when upright
Latching: Automatic dual latches released by a pull cord from either side; nylon latches with a 1/2" engagement face
Locking: Automatic ten-point locking, no key
Weather management: Water-shedding design, sealed hinges, uninterrupted side-rail seal; no drains or gutters
Folded storage: Molded brackets with rubber-cushioned standoffs and retractable bungees
Warranty: 3-year limited
Bed length: 5'10" (69.9") (GM's 5'8" box)
Part number: G3020079
Installation
Type: Clamp-on hard folding cover with cab-roof anchors · Mounting: TIGHT BITE clamps plus adhesive cab-roof anchors · Instructions: the STANCE manual for your box length, plus a truck-specific sheet where needed
Installation follows the LOMAX STANCE Cover Short Box Installation Instructions together with the 19-ON Chevy/GMC 1500 Special Clamp Instructions, all linked under Resources. No drilling is called for. The 19-ON Chevy/GMC 1500 Special Clamp Instructions also note: ensure side rail is not resting on contour of bulkhead. The cab-roof anchors go on only when air and surface temperatures are above 60° F, and the manual asks for at least 1" of space between the raised cover and the closest point on the cab. The manual asks that the cover stay closed for at least 48 hours after installation while the anchors bond and the cover conforms to the box.
Torque: 20 ft-lbs on all side-rail clamps; 20 ft-lbs on all clamps per the 19-ON Chevy/GMC 1500 Special Clamp Instructions.
This installation film shows a LOMAX cover going onto a 2019-or-newer GMC Sierra 1500. The steps follow LOMAX's manual; your bed length may differ from the one in the film.
Warranty. Agri-Cover gives the LOMAX STANCE Hard Cover a 3-year limited warranty, counted from when you receive it or from its manufacture date, covering faulty workmanship when the cover is used normally on the truck it was made to fit. Its only obligation is to repair or replace defective parts, at its option, and no labor or service allowance is given. Damage from accidents, abuse, misuse, alteration, neglect, improper installation and ordinary wear is not covered. Claims start with Agri-Cover's claim form or customer service; anything sent back needs a return authorization number first, and Agri-Cover pays the freight to send repaired goods back. Shipping. The carrier and ship method are set by the size and weight of the carton when the order is placed. Inspect on delivery. Open the carton when it arrives and check the cover assembly, side rails, clamps, cab-roof anchors, primer, alcohol pad and black sealant against the component list on page 2 of the installation manual for your truck before you start. Note any visible carton damage on the delivery receipt and photograph it.
Returns. Unused items in their original packaging can be returned within 30 days of delivery. If an item arrives damaged, defective or wrong, return shipping is on us. See our Returns & Refunds Policy, or email support@prestigetruck.com with any question.
About LOMAX
LOMAX is the hard folding tonneau cover line of Agri-Cover, Inc., the Jamestown, North Dakota company that also makes ACCESS roll-up covers. Most LOMAX covers clamp to the box with TIGHT BITE clamps (a few beds use bolt-on side-rail brackets instead), and every one rides less than 1/2" above it when closed and latches itself at ten points as its panels unfold.
The range has three lines. The Hard Tri-Fold is rated for 400 lb and comes in four urethane finishes. The Professional Series adds aluminum channels under each panel for a 500 lb rating and is offered in diamond plate only. The STANCE stands its folded panels upright behind the cab on steel pivot links and is offered in three finishes. All three carry the same 3-year limited warranty from Agri-Cover.
The whole bed, cover on
Fold the STANCE and it stands upright behind the cab at about 90 degrees, held by its RigidLink system and kept off the rear window by steel pivot links anchored to the roof. The full bed opens for tall loads without the cover coming off the truck. While it stands upright it blocks the third brake light, which is worth remembering before you drive with it raised.
Locks at ten points
Unfold the panels and the STANCE latches itself down at ten points with heavy-duty nylon parts, with no key to carry. To open, one pull of the release cord from either side of the bed frees both latches together.
Sealed along both rails
An uninterrupted seal runs the length of each side rail and the hinges are sealed, so water is shed off the closed STANCE instead of into the box. LOMAX calls it water-shedding rather than waterproof. Closed, the cover stands less than 1/2" above the box.
Frequently Asked Questions
Straight answers on specs, fit and support
Does the STANCE block the third brake light?
Yes, while it is standing upright. LOMAX notes that the vertical position blocks the third brake light, so keep that in mind before driving with the cover raised. Closed, the cover leaves the light clear.
Can I take the STANCE off the truck?
It is built to stay on and stand upright rather than lift off. LOMAX's comparison chart does not give the STANCE the easy on/off design of the Hard Tri-Fold, and the pivot links attach to anchors bonded to the cab roof. If you plan to remove your cover often, the Hard Tri-Fold is designed for that.
Is it waterproof?
LOMAX calls the design water-shedding, not waterproof. Sealed hinges and an uninterrupted seal along both side rails keep most rain and snow out, but keep anything that must stay dry in a closed container. Level rails and the included black sealant on factory holes and stake pockets help.
Do I have to drill my truck to install it?
Not on most trucks. TIGHT BITE clamps hold the side rails to the box and the two cab-roof anchors bond with adhesive, and on a few beds (deck rail and RamBox cargo rail systems, the Ridgeline, the 2024-on Tacoma) LOMAX's own instructions bolt the rails on with special brackets instead, still without drilling. The exception is the GMC CarbonPro box, whose instructions add a 1/4" hole drilled through the bed cap at each bolt location. The Installation tab for each part says what its truck needs.
How do I open it and lock it?
Pull the release cord from either side of the bed to free both latches, fold the panels up and stand the cover in its molded storage brackets, where retractable bungees hold it. Unfolding the panels relocks the cover at ten points without a key.
Which finishes are available?
Urethane Aluminum, Urethane Diamond Plate and Urethane Carbon Fiber, each with its own part number. All three share the 400 lb rating, upright storage and locking. The STANCE is not offered in FRP.
