AMP Research PowerStep™ | Automatic Electric Running Boards | 2019–2021 GM 1500 & 2020–2023 2500HD / 3500HD | SKU: 76254-01A

Brand: AMP Research | SKU: 76254-01A | Material: Die-Cast Aluminum (Anodized & PTFE Coated) | Application: Automatic Electric Deploy | Cab Styles: Crew Cab (Bolt-On) & Double Cab (Requires Board Trimming) | Free Shipping, Lower 48 | Affirm & Afterpay Available

You Upgraded Your GM Truck. Now Cab Entry Is a Constant Climb.

Factory rocker panels on early-generation T1 Chevrolet Silverado and GMC Sierra trucks sit exceptionally high off the pavement. Whether your rig rides at factory height or clears oversized all-terrain tires on a premium suspension setup, entering and exiting the cab is a daily physical strain. Heavy-duty 2500HD and 3500HD models compound the problem—a 22-inch rocker height on an unladen work truck means cargo handlers, site vendors, and family passengers struggle with safe access every single time.

Fixed factory steps permanently rob your truck of nearly eight inches of true ground clearance, acting as a permanent underbody trail obstacle. Worse yet, traditional stationary running boards funnel mud, slush, winter road salt, and gravel directly onto your boots every single time you step up.

Cheap imitation electric steps are not a viable alternative. Low-grade step motors lag under load, flex in extreme cold weather, and short out quickly when road brine seeps into unshielded pivot joints—failing completely within their first winter season. In high-heat arid desert environments, budget wiring harnesses warp under UV exposure and plastic components turn brittle, dry-rotting into an inoperable mess.

The AMP Research PowerStep (SKU: 76254-01A) is the permanent, industrial-grade fix. Engineered specifically for early T1 platform GM 1500 (2019–2021) and 2020–2023 heavy-duty (2500HD/3500HD) trucks, this system features smart, weather-sealed electric motors that instantly drop a full-length, high-traction step down 8 inches when any door opens. When closed, the steps retract completely flush beneath the rocker panels—protecting the linkages from trail debris, optimizing aerodynamics, and maintaining your truck's true ground clearance.

The Obsidian Take

Engineering Precision for Pre-Refresh T1 Architecture

The AMP Research PowerStep system eliminates the compromise between comfortable cab access and uncompromised underbody clearance. The 76254-01A is an ultra-specific, high-demand kit geometrically mapped to match the precise factory rocker panel weld stamps, body mount tracks, and digital communication modules unique to early T1 platform trucks and pre-refresh heavy-duty variants.

The Mount: Body Pinch-Weld, Not Frame Rail

The boards mount directly to the rocker panel/body pinch weld using dedicated aluminum brackets—not to the chassis frame rail. This is a critical engineering distinction. Suspension lifts don't affect the installation footprint because the rocker panel naturally moves with the cab body structure. However, body lifts of 3 inches or greater DO affect installation because they modify the height relationship between the cab floor and the chassis frame, shifting the step's ultimate drop height relative to the ground line.

The Motor: Single Per Side, Weather-Sealed

Driven by a single weather-sealed high-torque electric motor per side, the OBD-II controller reads digital door switches directly through the vehicle's computer network and sends 12V to both motors simultaneously upon any door opening, deploying the steps fluidly in approximately 1 to 1.5 seconds.

Instead of cheap stamped steel or thin-walled tubes, these boards are crafted from high-tensile die-cast aluminum coated in a military-grade anodized and PTFE non-stick corrosion shield. This prevents pitting and ensures the non-slip traction surface stays straight and safe. Complete with integrated OEM-style LED courtesy lights and a plug-and-play pass-through harness, it provides a seamless, factory-finished entry assist rated for a massive 600 lbs per side static load capacity.

Why This Platform Split Matters

In 2022, General Motors completely overhauled its vehicle network architecture on refreshed models, shifting from OBD-II analog pass-through to VIP/Global B digital gateways. The 76254-01A uses a simple OBD-II diagnostic gateway that works flawlessly on 2019–2021 1500s, the 2022 LIMITED/LTD carryover (which retained the legacy wiring harness), and 2020–2023 heavy-duty trucks (which remained on the older electrical platform).

If you own a 2022–2026 refreshed "New Body Style" 1500 or a 2024–2026 heavy-duty truck, this kit will not communicate with your vehicle's electronic gateway. Attempting installation triggers immediate CAN-bus module errors and dashboard warning lights. Those trucks require SKU 76255-01A.

Double Cab Configuration: Aluminum Board Trimming Required

The PowerStep aluminum boards ship factory-cut to full Crew Cab lengths (~85 inches). Double Cab trucks utilize smaller rear entry doors and shorter overall rocker panel dimensions. If you order this for a Double Cab, you must manually trim the aluminum step boards to approximately 73 inches using a standard metal-cutting saw, following the included application schematic. This is a one-time 30-minute operation that's non-negotiable for proper fitment.

⚠️ CRITICAL COMPATIBILITY WARNINGS — Read Before Ordering

• [LOCKOUT 1 — 2022+ REFRESHED MODELS]: This kit is engineered exclusively for pre-refresh T1 platform trucks. If you own a 2022–2026 refreshed "New Body Style" Silverado/Sierra 1500 or a 2024–2026 heavy-duty model, the 76254-01A will not communicate with your vehicle's electronic gateway. You require SKU 76255-01A instead.

• [LOCKOUT 2 — 2019 HEAVY-DUTY CARRYOVER]: The 2019 Silverado/Sierra 2500HD and 3500HD models are K2 legacy platform carryovers, not full T1 generation. This kit will not align properly on 2019 HD trucks. 2019 HD owners require a platform-specific unit.

• [LOCKOUT 3 — DOUBLE CAB TRIMMING MANDATE]: For Double Cab installs, you must manually trim the factory Crew Cab length boards (~85 inches) down to approximately 73 inches using a metal-cutting saw. Failing to trim will result in step linkage binding and non-returnable installation damage.

• [LOCKOUT 4 — SRW ONLY (NO DUALLY)]: This kit is engineered exclusively for single rear wheel (SRW) trucks only. It is NOT compatible with 3500HD Dual Rear Wheel (DRW/Dually) configurations. Lateral dually fender profiles conflict with the step's standard retraction path.

• [LOCKOUT 5 — ACCESS HARDWARE CONFLICTS]: This system is entirely incompatible with frame-mounted rock sliders, aftermarket body-mounted nerf bars, or trucks with heavy body lifts that alter the relationship between the cab floor and the chassis. All existing side armor must be completely unbolted and removed before installation.

• [LOCKOUT 6 — BODY LIFT & CAB EXCLUSIONS]: Body lifts greater than 3 inches shift the vertical relationship between the cab floor and the chassis frame, altering the step's deployment geometry. Additionally, this kit fits Crew Cab and Double Cab only. Regular Cab and 8-foot Long Bed configurations are entirely incompatible.

Confirmed Fitment (OFAS Standard)

• [Platform Note]: All fitments listed above are pre-refresh T1 platform architecture only. Refreshed models require SKU 76255-01A.

• [Heavy-Duty Platform Note]: The T1 heavy-duty generation launched in 2020 model year only. 2019 HD trucks are K2 legacy carryovers and incompatible.

• [Cab Configuration Note]: Crew Cab bolts directly without modification. Double Cab requires manual aluminum board trimming from ~85 inches to ~73 inches.

• [Bed/Axle Note]: Standard/Short Bed and Single Rear Wheel (SRW) configurations only. Long Beds and DRW (Dually) networks are completely locked out.

Technical Specifications

Before You Order — 4 Fitment Checkpoints

1. Generation & Refresh Validation (CRITICAL): Open your driver-side door and check the door jamb sticker. If you drive a 1500, it must be a 2019–2021, or a 2022 matching the "LIMITED/LTD" trim. If you drive a 2500HD/3500HD, it must be a 2020–2023 model. Refreshed 2022+ New Body Style 1500s and 2024+ HD trucks are locked out of this SKU.

2. Cab Configuration & Trimming Requirement: Crew Cabs are a direct bolt-on. Double Cabs require you to trim the aluminum boards down from 85" to 73" using a standard metal-cutting saw and the included template template. Regular Cabs are entirely incompatible.

3. Axle Configuration & Rocker Panel Clearance: Walk to the rear of your HD truck. This kit is strictly for Single Rear Wheel (SRW) setups; it will strike the body flares on a Dually (DRW). Additionally, check your rocker panels—if you have permanent rock sliders or nerf bars installed, they must be completely removed to clear the linkage paths.

4. Suspension Type & Body Lift Verification: Suspension lifts up to 6 inches are 100% compatible because the rocker panel moves naturally with the body. However, body lifts greater than 3 inches modify the vertical space between the cab floor and the ground line, altering the ultimate drop geometry.

Professional Installation & Mechanical Notes

Main Power Routing Strategy

Unlike low-draw accessories, this high-torque motor harness requires a dedicated heavy-gauge circuit routed entirely through the firewall grommet directly to the primary engine bay battery terminals via a 30-amp fused inline trunk. Do not tap into under-dash fuse slots or secondary auxiliary blocks. Under-dash circuits cannot deliver the sustained 15-amp draw the motors require during simultaneous deployment.

• Step 1: Locate the positive battery terminal in your engine bay and run the provided 10-gauge red insulated wire through the firewall grommet.

• Step 2: Route into the cabin and connect to the main PowerStep harness using the included marine-grade heat-shrink terminal blocks. Run the 10-gauge black ground wire directly to a bare, unpainted metal chassis frame ground point.

• Step 3: Connect the plug-and-play pass-through OBD-II controller under the dash. Test the system prior to mounting brackets to ensure smooth motor cycling (~1 to 1.5 seconds). Weak battery voltage (<11.2V) will slow deployment speed and stress internal gears.

Step Mounting Bracket Alignment & Fastener Torque

The step brackets mount to the rocker panel / body pinch-weld using 4 pre-drilled factory reinforcement points.

• Step 1: Position the aluminum brackets and loosely install all 4 bolts hand-tight.

• Step 2: Manually cycle the linkage arms 3–4 times without power to confirm a smooth traveling arc with zero binding.

• Step 3: Torque all 4 bolts in a diagonal cross pattern to exactly 18 ft-lbs using a calibrated torque wrench. Never exceed 18 ft-lbs on aluminum rockers, or you risk twisting the metal and causing permanent linkage binding.

• Pro Tip: On the driver side, DO NOT zip-tie the wire harness to the factory brake lines. Route all harnesses at least 2 inches away from hot or vibrating fluid paths to prevent jacket degradation.

AMP RESEARCH POLICY NOTE: Due to the vehicle-specific software programming loaded into the plug-and-play OBD-II diagnostic gateway box, once this wiring network has been connected to vehicle power, the system is non-returnable. Double-check all vehicle configurations prior to unboxing electrical sub-assemblies.

Questions We Get Asked

How do the running boards know exactly when to deploy and retract? The system includes an OBD-II controller that plugs directly into your diagnostic port. It reads the digital door open/close signals directly from your truck's internal network and instantly routes 12V power to the weather-sealed step motors. Both sides deploy simultaneously when any door is opened.

Why does a Double Cab truck require manual board trimming? The aluminum steps ship factory-cut to full Crew Cab lengths (~85 inches) to maximize production standardization. Because Double Cabs utilize shorter rear entry doors, you must use a standard metal-cutting saw to slice the boards down to ~73 inches along the marked lines on the included scaling template.

What is the precise difference between a 2022 "New Body Style" and a 2022 "Limited"? In 2022, GM simultaneously manufactured legacy T1 carryover trucks (labeled Limited or LTD) alongside refreshed T1XX platforms. Their digital control networks and body styles share zero cross-compatibility. This kit integrates purely with the analog-friendly pre-refresh Limited/LD layout. Refreshed trucks require SKU 76255-01A.

Will an aftermarket suspension lift interfere with the step mounting paths? No. Because the mounting links anchor directly to the body pinch welds rather than the frame rails, suspension lifts between 2 and 6 inches have zero effect on installation geometry. However, body lifts greater than 3 inches space the cab plane away from the frame, altering ground clearance.

Why is this premium system worth the investment over cheap drop steps? Manual steps add massive physical strain on lifted trucks and ruin ground clearance. Cheap electronic knockoffs use unsealed motor gears that seize in cold weather and generic wire-taps that corrode, causing CAN-bus dashboard faults. The AMP design uses military-grade anodized aluminum with a non-stick PTFE shield and a clean OBD-II interface that preserves your factory warranty.

Why Buy From Obsidian Forged Auto Supply

• Authorized AMP Research Dealer — Full manufacturer warranty validation (5-year motor, 3-year finish) with factory-direct tracking.

• Free Shipping, Lower 48 — Rapid large-parcel ground delivery shipped directly from our closest regional distribution warehouse.

• Real Fitment Verification — Text (469) 407-7538 (SMS only) with your GM truck’s VIN, cab layout, and suspension specs. An Obsidian specialist will audit your factory build sheet for a 100% certified fit confirmation before shipping.

• Premium Financing Available — Safe, secure checkout flexibility via Affirm and Afterpay on qualifying orders.

Disclaimer

The technical and product information presented above is compiled from data provided directly by the component manufacturer. Obsidian Forged Auto Supply maintains a rigorous engineering audit workflow to ensure vehicle fitment compatibility; however, we are not responsible or liable for sudden manufacturer-driven specification updates, raw metadata changes, or accuracy discrepancies in the foundational data sheets provided by the manufacturer.

2019–2021 GM 1500 ('22 LTD) / 2020–2023 2500HD & 3500HD SRW. Crew and Double Cab setups. Eliminate the entry climb. Add to cart.

Unsure if your truck's exact manufacturing date, custom trim line, or negative wheel offset will clear this automatic step geometry? Text your build specs to (469) 407-7538 and an Obsidian technician will verify it.