The first version, due in early 2024, is the fully loaded Sierra EV Denali Edition 1, which will be built in limited numbers and priced from $107,000.
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The high-end Sierra EV Denali Edition 1 boasts 754 horsepower and an estimated range of 400 miles.
When the battery pack is depleted, a DC fast charger can add about 100 miles of range in 10 minutes, GM said.
The feature-laden Sierra EV Denali comes with an adaptive air suspension, a massive 16.8-inch center display, 14-inch multi-color head-up display, panoramic glass roof and Super Cruise hands-free driving assist.