Sierra EV range when towing
Towing a typical trailer, expect the GMC Sierra EV Denali Extended Range (11.5 kW charger) to cover about 330 km, roughly half its 660 km rating.
Dashed line: Ottawa–Toronto 450 km
Sierra EV range with a trailer
A trailer adds weight, but at highway speed the bigger cost is aerodynamic drag from its flat front. A low, light utility or boat trailer costs less range than a tall travel trailer. Published tests of electric trucks towing campers commonly land between 40% and 60% of rated range, which is the band below.
| Version | Rated | Light trailer (60%) | Typical (50%) | Heavy or tall (40%) | Typical at 0°C |
|---|---|---|---|---|---|
| Denali Extended Range (11.5 kW charger) | 660 km | 396 km | 330 km | 264 km | 264 km |
| Elevation Extended Range (11.5 kW charger) | 660 km | 396 km | 330 km | 264 km | 264 km |
| Denali Extended Range (19.2 kW charger) | 620 km | 372 km | 310 km | 248 km | 248 km |
| Standard Range | 455 km | 273 km | 228 km | 182 km | 182 km |
Plan charging stops around the heavy-trailer column for camping trips, and check that chargers on your route have pull-through stalls, or plan to unhitch.
Rated range: Natural Resources Canada Fuel Consumption Ratings, battery-electric vehicles 2012-2026 (updated March 9, 2026), 2026 model year unless noted. Estimates explained in how we estimate.