The 2027 Chevrolet Colorado and GMC Canyon are expected to receive the upgraded L4B TurboMax engine, with GM documentation pointing to 350 horsepower and 455 lb-ft of torque. That would give both midsize pickups a 40-horsepower and 25-lb-ft advantage over the outgoing trucks, although complete public towing and payload specifications are still pending.

The new rating appears in GM powertrain documentation and order-guide coverage for the 2027 model year. GM has not yet released a consumer-facing specification sheet dedicated to the Colorado and Canyon, so the figures should be treated as documentation-backed expectations until Chevrolet and GMC publish full truck specifications.

2027 Colorado and Canyon powertrain

The L4B is a turbocharged 2.7-liter four-cylinder and replaces the L3B TurboMax used in the current Colorado and Canyon. That outgoing engine produces 310 horsepower and 430 lb-ft of torque. If the documentation applies unchanged to the midsize trucks, the new output will place them in the same power bracket as the Chevrolet Silverado 1500 and GMC Sierra 1500 equipped with the corresponding TurboMax rating.

GM's September 17 powertrain reference lists 350 horsepower and 455 lb-ft for its Enhanced TurboMax. Other documentation-based reporting attributes the same output to the Colorado and Canyon and indicates that peak horsepower arrives at 5,200 rpm, while peak torque arrives at 3,000 rpm.

TurboMax hardware changes

The higher output comes with several hardware and calibration changes. GM's next-generation Small Block engine details identify a new turbocharger, revised fuel injection, updated active thermal management and redesigned pistons as part of the TurboMax update.

Those changes extend the engine upgrade already introduced elsewhere in GM's truck lineup. In the Colorado and Canyon, the added output could be especially relevant because the turbocharged four-cylinder handles most of the trucks' towing and payload duties.

Towing and availability

GM materials indicate a maximum towing capacity of about 7,700 pounds for properly equipped 2027 Colorado and Canyon models. That figure would be in line with the outgoing trucks, but GM has not published a complete breakdown for every cab, drivetrain or trim configuration. Payload ratings also remain unavailable.

Order information and GM documentation point to the upgraded engine for the 2027 model year, but the source material does not provide final pricing, production timing or an on-sale date. Buyers who plan to tow should wait for the official Chevrolet and GMC spec sheets, including configuration-specific ratings, before comparing the new trucks with rivals.

The 2027 Colorado and Canyon will therefore bring a notable power increase without a confirmed change to their headline towing figure. Independent testing and production trucks will show how much the revised TurboMax changes real-world acceleration and towing performance.