2014-2019 GMC Sierra Vertical Door Kit

GMC Sierra Lambo Doors for the K2XX Generation

The K2XX GMC Sierra brought a more squared-off front end, pronounced wheel openings, and strong cab lines to the full-size pickup lineup. Those proportions work well with custom wheels, suspension modifications, and the kind of details GMC owners put into their truck builds.

Whether your Sierra is lowered with aftermarket wheels, lifted with a more aggressive setup, or built for truck shows, a Vertical Doors, Inc. conversion changes the way the front doors move while retaining the original door shells.

Open the door outward, raise it vertically, and the hinge conversion becomes part of the truck's presentation at shows, meets, photo shoots, or regular stops.

Just as important, the doors still need to close correctly. Proper hinge positioning, door gaps, weather sealing, latch engagement, and wiring clearance all matter to the finished installation.

VDI part number VDCGMCSIER14 is designed for approved K2XX Sierra applications rather than being a universal hinge kit.

GMC Sierra Vehicle Fitment

Part number VDCGMCSIER14 covers the following approved GMC Sierra K2XX model-year applications.

Sierra Trims, Packages and Cab Configurations

The K2XX GMC Sierra lineup includes trim designations such as Sierra, SLE, SLT, and Denali, depending on the model year and duty series. The All Terrain package and other available equipment groups also vary by model.

Regular Cab, Double Cab, and Crew Cab configurations were offered across the Sierra lineup, along with 2WD and 4WD versions.

These names help identify your vehicle, but a trim badge, drivetrain, or package name alone does not establish exact hinge-kit compatibility.

Because cab styles use different door sizes and proportions, confirm your exact configuration before ordering.

Product Details

Why Choose a Genuine Vertical Doors, Inc. Kit?

Vertical Doors, Inc. has more than 20 years of experience designing and manufacturing vehicle-specific Lambo door conversion systems for cars, trucks, and SUVs.

• Vehicle-specific hinge system for approved GMC Sierra applications
• Mounts using the vehicle's factory hinge bolt pattern
• Original factory front door shells retained
• Traditional outward-then-upward vertical door movement
• Gas shock assisted lifting movement
• Manufactured in the USA using domestic hardened steel
• Heat-treated pivot components
• Limited lifetime hinge warranty and six-month gas shock warranty, subject to applicable terms
• Installation and technical support from the manufacturer

What Comes With the Kit?

The GMC Sierra Vertical Door Conversion Kit includes:

• One driver-side Vertical Doors, Inc. hinge assembly
• One passenger-side Vertical Doors, Inc. hinge assembly
• Two gas shocks
• Required mounting hardware
• Vehicle-specific installation instructions

The system uses your Sierra's original front doors. Replacement factory door shells are not included.

Fitment assistance, installation guidance, and after-purchase technical support are available separately from the physical components included in the package.

How the GMC Sierra Vertical Door Conversion Works

After installation, open the converted front door outward until it reaches the hinge system's designed stopping point. From there, raise the door vertically with assistance from the gas shock.

The door does not raise straight upward from the fully closed position. It first moves outward to create the proper clearance for vertical movement.

Correct hinge adjustment is essential for consistent door movement, latch engagement, wiring clearance, weather sealing, and clearance between the door and surrounding body panels.

Installation Requirements and Modifications

The Vertical Doors, Inc. hinge system uses the vehicle's factory hinge mounting pattern. However, bolt-on does not mean the entire installation is modification-free.

The installation commonly involves front-fender removal, door-panel removal, wiring management, clearance work, and final door alignment.

Before Removing the Factory Hinges

Use 2-inch painter's tape to mark the factory door alignment before loosening or removing the original hinge assemblies.

Place tape across the door and adjacent body panels at several reference points, including near the hinges and firewall. Draw matching alignment lines across the tape to document the original horizontal and vertical position.

These marks help identify the original door alignment when the new hinge assemblies are installed and adjusted.

Door Wiring and Clearance Preparation

Door-panel removal is commonly required to access the factory wiring and obtain additional wire slack.

During the normal installation process, the factory wiring boot may be cut for routing, while the factory wires usually do not need to be cut. Follow the supplied application-specific instructions when managing wiring and connectors.

Inner-fender trimming or other clearance work may be necessary for the hinge system and door movement. This type of work is generally concealed after the exterior panels are reassembled.

Final Installation Checks

• Safely support the door throughout hinge removal and installation.
• Follow the supplied instructions for mounting hardware, hinge stops, and gas shock positioning.
• Ensure the factory wiring has adequate clearance throughout the door's movement.
• Check door-to-fender and surrounding body-panel clearance.
• Test the outward and vertical opening movements.
• Verify door latch operation, weather sealing, and correct alignment.
• Complete final checks before road use.

If you're unfamiliar with automotive door alignment, body-panel removal, drilling or tapping where applicable, trimming, or wiring clearance, we recommend using an experienced automotive customization or body shop.

GMC Sierra Installation Options

Whether you're building a custom Sierra 1500 or working on a heavy-duty truck, choose an installation option that matches your experience and vehicle configuration.

Independent installers establish their own labor pricing, schedules, and workmanship warranty terms. Confirm those details directly with your chosen shop.

Can the Sierra Be Returned to Factory Hinges?

The conversion retains the original factory front doors, and restoring the factory hinge configuration may be possible.

However, trimming, drilling, wiring changes, or other installation modifications may require additional repairs or replacement components before the vehicle can be returned to its original configuration.

Keep your original hinge hardware and discuss restoration requirements with your installer before beginning the conversion.

Choosing the Correct GMC Sierra Door Kit

GMC Sierra model years overlap across multiple truck generations. Identifying whether your truck is a 1500, 2500HD, or 3500HD is important, especially for 2014 and 2019 models.

The redesigned Sierra 1500 entered the K2XX generation for 2014, while the heavy-duty trucks transitioned to K2XX for 2015.

Before You Order

• Confirm your Sierra belongs to the approved K2XX generation.
• Verify whether your truck is a 1500, 2500HD, or 3500HD.
• Confirm your model year and exact cab configuration.
• For 2014 Sierra HD trucks, use the previous GMT900 application.
• For 2019 Sierra 1500 trucks, distinguish the redesigned T1XX from the carryover Limited model and confirm the appropriate kit.
• Disclose aftermarket fenders, custom bodywork, previous collision repairs, replacement hinges, or modifications near the hinge mounting area.
• Review the current shipping and return policies before placing an order.

Frequently Asked Questions