39 problems related to power train have been reported for the 2015 Chevrolet Colorado. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 Chevrolet Colorado based on all problems reported for the 2015 Colorado.
The transmission won't downshift while trying to accelerate after slowing down. The truck will start to very noticeably chug and jerk and not want to go from not downshifting when braking and then trying to accelerate. I have been close to getting rear ended when this happens and to avoid it I have to stomp on the gas pedal which then causes it to jerk erratically from downshifting too far and causing me to accelerate too fast and almost rear ending the vehicle in front of me. This happens every time I slow down to go around someone turning or slowing down to stopped traffic and then accelerating again. While driving with my wife at around the 200 mile mark it started chugging badly and she thought we were breaking down. It is very embarrassing when someone is riding with me because no vehicle should act like this. Gm should be ashamed of themselves. I have about 10,500 miles on my truck right now and this issue has been a serious issue since I drove it off the lot brand new. Took it to the dealer and they said it should take a couple seconds to shift from gear to gear. Its funny because I have driven a lot of vehicles and none of them have done that or took that long to shift. I know the transmission is supposed to adapt to your driving. . . Which seems very unnecessary to me but obviously it is not working out for the Colorados. Adaptive transmissions need to go and put a firm sporty shifting transmission in these trucks.
I wanted to reach out to you on Chevrolet’s claim that their engine achieves 305 horsepower. While it may be true that their engine achieves this figure it does so at a stated 6800 rpm. The 6800 figure is important to note because the trucks’ red line indicating potential dangerous operating conditions start at 6500 rpm. So in essence in order for an owner to achieve 305 hp they would have to be operating their truck in a potentially dangerous manner. Even in the 2015 Colorado owner’s manual it indicates the danger of operating above the redline… “do not operate the engine with the rpm’s in the warning area. ” gm is stating that someone can achieve maximum hp only by operating the vehicle in a dangerous manner. . . . Really?! I believe it will only be fair for Chevrolet to re-evaluate their maximum horsepower prior to their engine hitting the redline.
Purchased truck in November 2014. Crew cab z71. Had problems right at 200 miles. They said the transmission has to learn my style of driving. At 2,00 miles transmission and engine still don't talk to each other. I can accelerate and 5 seconds or more later the transmission reacts. In heavy traffic, a couple of cars get between me and the car I was following before it reacts and I have to slam the break. Always seems to be in the wrong gear. Will chug a lot until it gets up to the speed for that gear. Took it to dealer at oil change and they reset the control module. After 2,000 more miles, took it back because it still acted the same way. Took tech on drive and was able to duplicate all my concerns. He said that there was nothing he can do and that I needed to wait for ecm calibration from gm. He said he felt bad for me. Surely I will get in an accident because of this slow transmission that is always in the wrong gear. Currently I am at 7,000 miles. The only thing the tech could say was not to drive it in stop and go traffic. . . . Seriously. Clearly this adaptive transmission is bull crap and gm probably knows they have a piece of crap programming but can't figure it out. Please figure out this shifting problem, because other than this the truck is nice. . . Too bad, because if they don't someone will get in an accident and hopefully it will not be fatal. Get rear ended because it doesn't accelerate when you need it to, or it finally moves when you are needing to break. Fix this now or at some point you will pay big. . . .
The contact owns a 2015 Chevrolet Colorado. After the vehicle was started, it hesitated to accelerate form a stop. The failure recurred three times. The vehicle was taken to a local dealer where the technician stated that the transmission needed to be serviced. The vehicle was repaired. After the repair, the vehicle experienced occasional stalling. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was 18,000.