Three people are in custody after thousands of gallons of diesel fuel were stolen from a gas station in Colorado's mountains.

A Colorado truck repair shop that disabled emissions control equipment on hundreds of heavy duty trucks' diesel engines was recently penalized and its owner sentenced to a year behind bars.

The Colorado ZR2 concept's new 2.8L Duramax diesel packs the power – an estimated 181 horsepower at 3,400 rpm and 369 lb-ft of torque at 2,000 rpm – to tackle the toughest trails.

Colorado will also offer the segment's only diesel engine in its second year – a DURAMAX 2.8L I-4 turbodiesel that's already been proven in tough global markets.

Average gasoline prices in Colorado have risen 0.7 cents per gallon in the last week, averaging $2.86/g today, according to ...

Gas and diesel prices across the country increased according to the EIA, though not by more than 7 cents overall for either ...

Prices shown for the used 2017 Chevrolet Colorado Crew Cab Z71 4WD T-Diesel with NaN miles are what people paid to buy this vehicle or what people received when trading in this vehicle at a dealer.

Prices shown for the used 2018 Chevrolet Colorado Crew Cab Z71 4WD T-Diesel with NaN miles are what people paid to buy this vehicle or what people received when trading in this vehicle at a dealer.

Average gasoline prices in Colorado have fallen 5.2 cents per gallon in the last week, averaging $2.86/g today, according to ...