Holden has released the first teaser images of a new range-topping Colorado.

Holden has released the first teaser images of a new range-topping Colorado.

Set to be unveiled tomorrow, the range-topping truck features a rugged front bumper, side steps and plenty of chrome trim.  The model will also have black decals, a soft tonneau cover and unique alloy wheels with an arsenal grey metallic finish.

Little else is known about the truck but Holden hinted it will have a towing capacity of 3.5 tonnes.  This likely means it will be powered by a 2.8-liter Duramax diesel engine that develops 197 bhp (147 kW) and 324 lb-ft (440 Nm) of torque.

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Holden teases a range-topping Colorado