This is a great vehicle to look at and sit in and even drive sometimes, but it runs like trash (polite) some times. It is not a consistent problem but happens often enough that it needs to be repaired. The loss of power, lack of acceleration and indecision of the transmission shifting is not only annoying, but is also dangerous. However, GM seems to be sweeping the problems under the table by passing the problem on to the dealers. The dealers are throwing their hands up by declaring there is nothing they can do : that its a GM problem and until GM develops new software to reprogram the ECM there is nothing that they can do.

They also say that if there are no trouble codes when they test for them, there is nothing wrong and everything is functioning properly. Unfortunately, with this particular problem, everything is probably functioning properly: just not together. This problem has been in existence since the 2015 models were brought out and so far, they have not fixed it. From what I can tell from other written complaints, everyone is being told the same thing: that everything is operating normally.

My dealership (Lee Buick, GMC in Crestview, Florida) has even lied to GM and told them that they drove my Canyon "several times" and found no issues. In fact, they drove it one time for about 7 miles (as per the service tech) and determined that it was okay. The problem with this engine/transmission/ECM combination has been documented over and over in complaint forums but GM ignores it by saying everything is running according to specs. Maybe it's time for some class action.

This is amazingly bad. It appears all 2015-2016 GMC CANYON and Chevy Colorados with the V6-auto drive train have this problem. The internet is flooded with the same complaint. Essentially, the truck will not accelerate at any rpm under 2000 rpm. Plain and simple you depress the accelerator and absolutely nothing happens. Very dangerous when passing or trying to avoid an accident. Going up hills the truck stumbles and misfires and toys to figure out what to do. I have had into GMC service multiple times and contacted GMC directly with no resolution. They claim it is “as designed” and it is not a problem!