Base model specifications for the 2005 Chevrolet Colorado include rear wheel drive, five-speed manual transmission powered by a 2.8 liter dual overhead cam inline four-cylinder gas engine, generating 175 horsepower and 185 foot-pounds of torque. It had a 19-gallon fuel tank and got an average of 21 miles per gallon.
Buyers could change engines to an optional 220 horsepower, 3.5-liter five-cylinder gasoline model and switch transmissions to a four-speed automatic with overdrive. It was available in three different cab styles, including standard, crew and extended. There were also three different suspension package options to choose from that included short and long arm front suspension, solid live axle rear suspension and front independent suspension. It was available in 30 different style combinations for the two models, the ZQ8 and Z85.
The truck was available in two-wheel or four-wheel drive versions. Both types typically rode on P205/75R15 all season tires that were mounted on 15-by-6-inch steel wheels, although other tires were available as options. There was a temporary spare tire mounted under the body. The Colorado's minimum ground clearance was between 5.0 and 8.4 inches depending on the suspension and tire selections.
Safety equipment included an anti-lock braking system, electronic brakeforce distribution, an engine immobilizer and a passenger airbag deactivation switch.