In brief, the 2007 Colorado could be equipped with a 3.5-liter inline-five gasoline engine or, in select configurations, a 2.8-liter Duramax diesel.
Overview of the 2007 Colorado's powerplants
GM offered a compact-truck powertrain lineup designed for a balance of everyday driveability and towing capability. Availability depended on trim, cab configuration, and geographic market.
Gasoline engine options
The following gasoline powerplant was commonly offered for the 2007 Colorado in U.S. configurations.
- 3.5-liter inline-five gasoline engine
Gasoline options were paired with manual or automatic transmissions, with 2WD or 4WD drivetrain configurations depending on the model.
Diesel option
For buyers seeking higher low-end torque and better fuel economy for towing, a 2.8-liter Duramax turbo-diesel inline-four was available on certain trims and markets.
- 2.8-liter Duramax turbo-diesel inline-four
Diesel availability was limited to specific configurations and markets; not every Colorado could be equipped with the diesel engine.
Notes on availability
Engine choices could vary by cab style (regular, extended, crew), bed length, drivetrain (2WD vs 4WD), and whether the truck was destined for the U.S., Canada, or export markets. For any given used example, checking the VIN or owner’s manual confirms the exact engine.
Summary
The 2007 Chevy Colorado's engine lineup centered on a 3.5-liter inline-five gasoline engine, with an optional 2.8-liter Duramax diesel in specific configurations. This combination offered buyers a balance of performance, payload, and fuel efficiency, with availability tied to trim and market.