The 2026 GMC Sierra EV Denali Max Range delivers strong performance and a premium driving experience, but one feature left the biggest impression during a seven-day, hundreds-of-miles test drive: the MidGate Pro. Available on both the GMC Sierra EV and Chevrolet Silverado EV, the system transforms the truck’s cargo flexibility by allowing the rear wall of the cab to be fully removed for longer loads or a more open cabin.

What Is the GMC Sierra EV MidGate Pro?

The MidGate Pro allows the rear glass and the back wall of the cab to fold away, creating a continuous opening between the cab and the bed. This makes it possible to carry exceptionally long cargo or simply enjoy increased airflow through the cabin.

The feature is also offered on the Chevrolet Silverado EV. Similar functionality previously appeared on the Chevrolet Avalanche and Cadillac Escalade EXT, although it returns in a modern form on GM’s electric trucks.

According to the review, an electric truck is especially well-suited to this design because the cab and bed form a single contiguous body rather than the separate cab-and-bed layout used on traditional body-on-frame trucks. The absence of emissions also eliminates concerns about monoxide entering the cabin.

Why the MidGate Pro Works Well

The review highlights several aspects of the MidGate Pro that make it easy to use in everyday driving.

• Simple one-person operation: Folding the MidGate down takes less time than clearing items from the rear seat.
• User-friendly design: A small retaining catch securely holds the rear glass while it is being released, making the process easier to manage.
• Built-in glass storage: The rear seatback includes an enclosed storage pocket for the rear glass, allowing it to remain safely stored inside the truck.

The Biggest Drawback

The review identifies the hard tonneau cover as the truck’s most frustrating feature. The cover must be removed before using the MidGate Pro, and it is described as both heavy and cumbersome to handle.

Real-World Cargo Measurements

Instead of relying on manufacturer specifications, the review measured the truck’s cargo space with a tape measure. The recorded dimensions are:

• Truck bed length with tailgate closed: 70 inches
• Truck bed length with tailgate down: 95 inches
• Practical maximum cargo floor with MidGate open and tailgate closed: 95 inches
• Practical maximum cargo floor with MidGate open and tailgate down: 119 inches
• Space behind the driver’s seat through the MidGate with tailgate closed: 110 inches
• Space behind the driver’s seat through the MidGate with tailgate down: 134 inches
• Longest item that could be carried without significantly affecting the driver or front passenger, with the item resting on the center console: 160 inches

MidGate Pro Adds Everyday Versatility

During the week-long evaluation, the MidGate Pro emerged as the reviewer’s favorite feature of the 2026 GMC Sierra EV Denali Max Range. Its combination of easy operation, integrated storage for the rear glass, and expanded cargo capability made it the standout feature, despite the inconvenience of removing the truck’s hard tonneau cover before it can be used.