According to AutoGuide, Colorado owner James Bearing noticed the tachometer on his 3.6-liter LFX V6-equipped truck has a redline at 6,500 RPM, when GM advertises the engine makes 305 horsepower at 6,800 RPM.
Bearing inquired to Chevrolet about the matter, but they didn’t immediately respond. GM truck spokesman Tom Wilkinson has since sent out an email addressing the error, saying “the graphics on the cluster of the trucks are slightly off. The redline is 6,800, which is where the rev limiter is set. We are updating the graphics on future trucks.”
It’s unclear how soon GM will be able to apply the changes to the trucks, but were sure they want as little Colorados and Canyons rolling off the production line with 6,500 RPM tachs as possible. It’s also unclear if current Colorado and Canyon owners will receive updated tachs, or if they will have to make do with a 6,500 RPM redline.