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Luverne
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LUVERNE Regal 7 oval wheel-to-wheel steps are the ultimate combination of deluxe style and reliable functionality. They feature extra rear step pads for convenient truck bed access, a highly rust-resistant construction and a vehicle-specific fit for your truck. Regal 7 wheel-to-wheel steps are engineered for practical access to the bed of your truck, featuring an extended length and extra rear step pads. Wheel-to-wheel running boards give you a solid step up for easily reaching items in the truck bed, such as a truck tool box, ladder rack, 5th wheel hitch or other equipment. Regal 7 oval side steps are fitted with large, non-skid step pads. They feature a 7" width and a textured surface, providing enhanced comfort and safety when climbing in and out of your pickup truck. The step pads and matching end caps of Regal 7 wheel-to-wheel steps are angled for a sleek accent. To ensure excellent strength and lasting corrosion resistance, Regal 7 oval side steps are constructed from stainless steel. The stainless steel tubing measures 7" wide and has an elliptical shape for style and strength. All Regal 7 side steps are designed for a custom-fit installation, using vehicle-specific brackets. The brackets are built from strong carbon steel and have a durable black powder coat finish. They install using pre-existing mounting points on the truck to greatly reduce installation time and eliminate tedious modifications. This particular set of LUVERNE Regal 7 oval wheel-to-wheel steps is designed to fit specific years of the Chevy Silverado 2500 HD or 3500 HD and GMC Sierra 2500 HD or 3500 HD (see application information to verify fitment; brackets included but shipped separately).
Regal 7 oval wheel-to-wheel side steps are designed to be the largest oval nerf bars on the market, featuring a patented design, non-skid step pads and a sleek nerf bar styling. They have full-width step pads for non-skid comfort and safety.
LUVERNE has manufactured truck accessories in the United States since 1963, specialising in grille guards, running boards, side steps and mud guards for pickups, commercial vans and SUVs. Products are built primarily from stainless steel, aluminium and mild steel, with model-specific mounting kits that use existing frame locations for a bolt-on installation.
LUVERNE has been manufacturing automotive accessories in the United States since 1963, and six decades of continuous production have made it a nationally recognised name in the truck accessory market. Now a Lippert brand, it concentrates on a defined set of products rather than spreading across the whole aftermarket: front-end protection, step access and spray protection for pickup trucks, commercial vans and sport utility vehicles.
Step products are the largest part of the catalog and the range is unusually deep, because the right step depends on the vehicle's ride height, the width of the rocker panel and how often people get in and out. The O-Mega II six-inch oval steps give a wide, flat standing surface in polished stainless or black powder coat, while the Regal 7 seven-inch oval steps go wider still for full-size crew cabs and lifted trucks. The broader running board and side bar range covers round tube, oval and boxed profiles across cab configurations, with treads positioned at the door openings where they are used.
Grille guards protect the front end against impacts, brush and road debris, built in tubular stainless or steel with model-specific brackets that tie into factory frame mounting points. Because the fit is engineered per vehicle, installation is a bolt-on job that does not require drilling or cutting on most applications.
Rounding out the line, LUVERNE mud guards and mud flaps shield rocker panels, paint and following vehicles from stones and road spray, in widths matched to the tyre and fender they sit behind. Material choice runs through everything the brand does: stainless steel where appearance and corrosion resistance matter most, aluminium where weight is the priority, and mild steel with protective coating where strength and value lead. Customers include contractors, fleet operators, van upfitters and truck owners.
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Yes, the CURT 401747 is designed for 2015 and newer GM 2500/3500HD pickups in Regular, Double, and Crew Cab configurations, with both gas and diesel engines. This is a body mount application with no drilling required.
No. The CURT 401747 is specified for 2015 and newer GM 2500/3500HD pickups only. Older models are not listed as compatible.
Yes, the CURT 401747 is compatible with Regular Cab, Double Cab, and Crew Cab configurations. However, the center mounting bracket (Item #4, 5) is used as the rear bracket on Regular Cab models only, so the bracket configuration differs by cab style.
Yes, the CURT 401747 is compatible with both gas and diesel versions of the 2015+ GM 2500/3500HD.
No. The CURT 401747 is a no-drill application. It uses the factory body mount bolt locations and spring hanger bolts, so no drilling or cutting is required.
The kit includes: 3/8"-16 x 1.0" hex head screws, 3/8" flat washers, 3/8" serrated flange nuts, 3/8" rubber cushion washers, 3/8"-16 double-ended studs, 3/8"-16 x 2" hex head bolts, 3/8"-16 nylon lock nuts, 1/2" flat washers, and smaller flat washers. See the Service Parts List for complete quantities and part numbers.
Yes. Step 5 requires you to remove the factory front, center, and rear body mount bolts and replace them with the mounting brackets. The manual notes that 2010+ GM Silverado/Sierra models may have excessive thread locker in the body mount bolt area, so use caution when removing these bolts.
The manual does not specify whether the battery must be disconnected. Consult the manufacturer or a qualified installer for guidance on this step.
1. Pre-assemble the front bracket on the left side. 2. Assemble the load reaction studs and hardware. 3. Attach the load reaction stud assemblies to the mounting brackets. 4. Remove factory body mount bolts and install the front, center, and rear mounting brackets (finger tight). 5. Attach the rear outboard bracket to the rear inboard bracket. 6. Attach the spring hanger brackets. 7. Install the step boards per their instructions. 8. Position and tighten the load reaction bolt assembly. 9. Repeat steps 1–8 for the right side.
On the left side of the vehicle, assemble Items #1, 3, and 14 using three 3/8"-16 x 1.0" screws (Item #13), 3/8" flat washers (Item #10), and 3/8" flange nuts (Item #11). Torque to 19 lb. ft. as shown in Figure 1.
On the short threaded end of the load reaction stud (Item #12), install a 3/8" serrated flange nut (Item #11) backwards to the bottom of the thread. Then install a 3/8" flat washer (Item #10) and rubber cushion washer (Item #9) tight against the serrated flange nut; the stud end must be recessed in the rubber washer approximately 3/16". On the long threaded end, install a 3/8" serrated flange nut (Item #12) backwards near the bottom of the threads.
Insert the stud from the inboard (frame) side through the lowest hole in the bent flange of the bracket that allows the rubber washer to seat firmly against the frame side wall. Install a 3/8" serrated flange nut (Item #11) on the outboard end of the stud, finger tight only, until final assembly.
Remove the factory front body mount bolt and install the front mounting bracket (Items #1, 3) to the front body mount as shown in the manual. Leave these fasteners finger tight until final assembly.
Remove the factory center body mount bolt and install the center mounting bracket (Item #4) to the center body mount as shown. Leave these fasteners finger tight. Note: the center bracket is used as the rear bracket on Regular Cab models only.
Remove the factory rear body mount bolt and install the rear mounting bracket (Item #8) and washer (Item #15) to the rear body mount as shown. Leave these fasteners finger tight. Then attach the rear outboard bracket (Item #6) to the rear inboard bracket (Item #8) using three 3/8"-16 x 1.0" screws, 3/8" flat washers, and 3/8" flange nuts (Items #13, 10, 11), with the outboard bracket mounted to the back side (rear) of the inboard bracket. Torque to 19 lb. ft. Note: there is a difference between Double Cab and Crew Cab applications; use the correct holes as shown in Figures 2 and 3.
Loosen the factory spring hanger bolt or nut just enough to slide the inboard spring hanger bracket (Item #18) behind the flange of the bolt or nut, with the channel open to the outboard side. Install the outboard spring hanger bracket (Item #19) so its inboard portion fits inside the channel of the inboard bracket, using a 3/8"-16 x 2" bolt, 3/8" flat washer, 1/2" flat washer, and 3/8"-16 nylon lock nut (Items #10, 16, 17, 20). Leave loose until the step board is in place.
Most fasteners are left finger tight during assembly. After the step boards are installed per their own instructions, position the load reaction bolt assembly so the rubber cushion is snug against the frame side wall, then tighten the 3/8" flange nuts on either side of the bracket to 19 lb. ft. Ensure the mounting brackets do not touch the inside wall of the body mount housing, and torque the body mount fasteners to the manufacturer's specifications.
The three 3/8"-16 x 1.0" screws, 3/8" flat washers, and 3/8" flange nuts used to assemble the front bracket (Items #1, 3, 14) must be torqued to 19 lb. ft.
The three 3/8"-16 x 1.0" screws, 3/8" flat washers, and 3/8" flange nuts used to attach the rear outboard bracket to the rear inboard bracket must be torqued to 19 lb. ft.
The 3/8" flange nuts on either side of the load reaction stud assembly must be tightened to 19 lb. ft. after the step boards are installed and the rubber cushion is positioned snug against the frame side wall.
The manual states that body mount fasteners must be torqued to the manufacturer's specifications but does not provide the specific torque value. Consult the GM factory service manual or the manufacturer for the correct torque specification.
The CURT 401747 uses 3/8"-16 fasteners throughout: 3/8"-16 x 1.0" hex head screws, 3/8"-16 x 2" hex head bolts, 3/8"-16 serrated flange nuts, 3/8"-16 nylon lock nuts, and 3/8"-16 double-ended studs. Washers include 3/8" flat washers, 1/2" flat washers, and rubber cushion washers.
The step boards must be installed after the brackets are assembled but before final tightening. Step 7 requires you to install the step boards per their own instructions, and Step 8 specifies that you then position and tighten the load reaction bolt assembly. The spring hanger brackets are left loose until the step board is in place.
Use caution when removing the body mount bolts, especially on 2010+ GM Silverado/Sierra models, which may have excessive thread locker in the body mount bolt area. This can make removal difficult. Take your time and use appropriate tools to avoid stripping or damaging the bolts or threads.
The mounting brackets must not touch the inside wall of the body mount housing. Ensure proper positioning during assembly to maintain this clearance.
CURT Group recommends regular inspection and maintenance of the leaf spring attachment point per GM Technical Service Bulletin 09-03-09-001E: Clunking Noise from Rear of Vehicle (Re-torque Leaf Spring Bolts) for 2007–2017 Chevrolet GMC Trucks. Failure to regularly inspect and maintain factory-recommended torque values may result in damage to the vehicle.
Yes. Step 9 instructs you to repeat Steps 1–8 for the right side of the vehicle. However, the front bracket parts differ by side (Item #1 is left, Item #2 is right), and the center and rear brackets also have left and right versions. Ensure you use the correct left or right bracket for each side.
Yes. The kit includes left and right versions of the front, center, and rear mounting brackets. The Service Parts List shows separate part numbers for left (LH) and right (RH) brackets. Ensure you install the correct bracket on each side of the vehicle.
The CURT 401747 fits 2015+ GM 2500/3500HD pickups in Regular, Double, and Crew Cab configurations with gas or diesel engines. It is a no-drill, body mount application.
No. The CURT 401747 is a no-drill application that uses factory body mount and spring hanger bolt locations.
Yes. You must remove the factory front, center, and rear body mount bolts and replace them with the mounting brackets. Use caution on 2010+ models, which may have excessive thread locker.
Torque the front bracket, rear bracket, and load reaction stud assembly fasteners to 19 lb. ft. Body mount fasteners must be torqued to the manufacturer's specifications (consult GM factory service manual).
Leave most fasteners finger tight during assembly. After installing the step boards, position the load reaction assembly and tighten the 3/8" flange nuts to 19 lb. ft. Ensure brackets do not touch the body mount housing interior.
Regularly inspect and maintain the leaf spring attachment point per GM Technical Service Bulletin 09-03-09-001E. Failure to maintain factory-recommended torque values may result in vehicle damage.
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