Nice Accelerator But Lazy Shifting - 2015 Chevrolet Colorado Long-Term Road Test

2015 Chevrolet Colorado Long-Term Road Test

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2015 Chevrolet Colorado: Nice Accelerator But Lazy Shifting

by Mike Monticello, Senior Road Test Editor on August 31, 2015

2015 Chevrolet Colorado

I don't know about you, but I'm tired of abrupt throttle pedals. It's one of my pet-peeves. More and more cars have these off-the-line jumpy gas pedals, and it's highly annoying.

While talking to an engineer from a car manufacturer, I was surprised to learn that these abrupt throttles aren't a calibration flaw, as I originally assumed, but in fact are completely intentional. Why?

"To make the car feel quicker than it is," the engineer said.

Thankfully, our 2015 Chevrolet Colorado's throttle has none of that. It's perfectly supple and tuned quite well, especially from the initial tip-in.

The same can't be said for the Chevy's six-speed automatic transmission. It's lazy. Actually, it's initially too eager to get into top gear for fuel economy purposes, like many other transmissions, but then it's slow to react to requests for more power.

Here's the scenario: The transmission has quickly gotten itself into a high gear at low rpm, yet you need a bit more acceleration. For whatever reason, it's hesitant to downshift. By the time it finally does accomplish that downshift, you now really need two gears. Yet the Colorado feels the need to ponder that question as well.

Wait a bit longer and it finally downshifts to the proper gear that it probably should have just gone to in the first place. This is a slight exaggeration based upon actual events, but you get the idea.  

The end result: Between the overly-anxious upshifts and lazy-reacting downshifts, this transmission spends considerable time in the wrong gear.  

The gas pedal: Tuned nearly perfect.

Transmission: Still needs some calibration.

Mike Monticello, Senior Road Test Editor @ 16,968 miles

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