This problem has been with me for quite a while. I have had the truck since it was new. The problem started after a year or so and was intermittent or depended on the level of acceleration. Some times it takes several seconds to shift with a rev between gears. Other times it just bangs into second. This always happens when shifting from first to second gear when the vehicle is cold.

I put up with it for a while then decided to try a fluid change. That was done last July. No change in the shift even though the shop used the recommended oil purchased from a Chevrolet dealership.

The shifting pattern never changes, always the 1-2 shift.

Let’s start by saying I will never own/buy another GM product ever! I purchased this 2017 Chevy Colorado used with 51,000 miles on it. It wasn’t a week when I noticed and felt what I describe as a slamming of the transmission. Felt like the entire transmission was going to just keep going out of the back of my truck when braking. The transmission also has trouble completely it shifting into the final two gears. It’s been back to the Chevy Dealer 4 times they have at said they attempted to repair it. The last time they kept it in the shop for 10 days replacing all kinds of parts, including the torque converter. Result - NO CHANGE! The Service Manger at this GM Dealership drove the truck after the last time I was in. He said the transmission operation was normal. In my humble opinion he needs to be tested for drug use.

NO CHANGE as his transmission is just a piece of junk and an engineering solution needs to be designed and implemented into to all Colorado Pickups!

My current mileage is 36201. I am out of warranty. Was told I would have to pay diagnostic fee to figure out why display radio is acting up. It has seriously startled me by having the radio turn up volume to the Max while driving by itself. I can't do anything as far as touch, log in, change channels nothing with touch screen. I am not the only one. My uncle has a 2016 chevrolet colorado zr2 4 wheel that is doing the same thing. I have researched online and there are hundreds of people having the same problem. Mine started acting up with a little over 18000 miles. I am a disabled widow and haven't had the time to take vehicle to dealer to fix it. It clearly is a common defect that chevrolet won't make good on. I called main chevrolet manufacture and they told me there's nothing they can do because my truck is out of warranty. " I'll have to pay diagnostic they said but didn't say they'd pay for it!

Something needs to be done about this as I feel it should be part of a lemon law type lawsuit. Having major problems with the transmission as well hard shifting, skip shifting, not going into next gear and hard jolt shifting. There's clearly many people that have this issue as well. With me being disabled this could really cause me to get into an accident and it's not safe for me to drive this vehicle! It needs to be addressed quickly as possible to avoid injury to myself and others! Please respond abs let me know how quick you can help me fix my vehicle please! I'm afraid to drive it for fear is going to catch on fire or something! I need help now. I can't afford a diagnostic then they'll say it needs to be fixed how much is that going to be? This clearly isn't right.

My cousin her impala has the same problem. It has caused me mental issue because the Damn radioo devices to decides to push buttons on its own and blasts my radio to the loudest without notice! It calls people on its own doesn't respond to touch at all. The transmission jerks real hard at times causing me to be concerned about my safety.! I'm afraid to drive it! Chevrolet Corp told me I would have to pay diagnostic for the radio and pay for repair? My uncle chevrolet does same thing, cousins impala same thing!

Issue just started, when driving at highway and lower speeds truck feels like driving over rumble strips. The same issue happened when I first bought the truck where all power was lost from engine (under 500 miles on truck). Dealer replaced something on the truck and it has been fine until now (45,000 miles later). Now dealer is telling me that my powertrain warranty does not cover the cost to make repairs. I bought the powertrain warranty when I bought the truck new. I thought the transmission was part of the powertrain warranty.

Noticed the shutter around 25,000 miles. Took it to be looked at in October and had the torque converter replaced. Within a week I could tell the issue was beginning to return. I waited a couple weeks and called the dealership. I was told that since my last visit, GM has directed them to stop replacing the torque converters. GM is apparently working on a new transmission fluid that will be released in the first quarter of 2019. They can only offer a transmission fluid flush as a temporary fix until them.

2017 Chevy Colorado 4 door V-6, started to shuttle in Sept. 2017. Brought it in, they hook their machine up, they didn't find anything wrong. So I brought it in again. They changed trans fluid, 3 point flush. That worked for 2 months, then shuttle came back. The next thing they changed was the torque converter in 2018, that lasted about a couple of months, so they put another torque converter on that had a different number. Started to shuttle a few months later. This was in 2018. They told me they will be getting new type of trans fluid in Jan 2019.