general problems of the 2018 Chevrolet Colorado - part 1

Transmission oil leak with only 60,000 miles just bought from a dealership as is 3 days ago and was not informed of the issue.

Clunking sound coming from rear end upon normal acceleration. When I take my foot off of the brake pedal, and depress the gas pedal, a loud clunk appears to come from the differential. If I coast first and then depress the gas pedal, it is not as pronounced. When you slow down to make a corner, and resume speed exiting the corner it is also pronounced. It should be noted that I am a safe adult driver (safe driver module installed in truck) and have 35,800 miles. My truck has always been serviced by my Chevrolet dealership; I am an older gentlemen and never drive recklessly. I'd like to think the rear differential should not be making a clunking sound at this point in its history.

Key can't be removed when the truck is in park. Locks go up and down when vehicle is moving. Transmission stuck in 3rd gear. Stabilitrack and traction control indicator lights appear on dashboard. Exhaust brake and traction control switches don't work.

At around the 105k mile range the truck would make a gear whine sound and shudder between gears at around the 50mph range, speeding up or slowing down a bit would fix the issue. By 110k miles the truck was making the gear whine sound at speeds over 10 miles an hour studdering at every gear change. I took it to a mechanic who said there were no TSB's for the truck and suggested doing a trans oil dump and filter replacement. The trans filter was replaced, and 7 quarts mobil1 lv atf blue label oil was put into the transmission. The studdering has reduced to just at the 50mph range but the gear whine sound has if anything gotten louder.

In [xxx] I took my truck in for oil change, inspection and 3rd complaint of shaking, and shuddering, lurching at a stop, they told me my transmission was broken, they would have to order the part and their was no eta on when they would get it. I was told there were none in the tri-state area from another dealership. We are a one (1) car family and jim trenary chevy said they don’t give out loaners, therefore we had to rent a car at 370. 00 a week. Here it is January 15 and we are still renting a car. They finally got the part sometime last week, but we need help! we have spent over 5,000 in rental car fees and gm will not reimburse us until we return the rental car, even though we have paid cash every week, and we’re have had to borrow from my husbands future paychecks. We are broke. We have to pay the deductible of 500. 00 when it is finally fixed, plus, during the snow storm last week someone side swiped my rental car, and I have to give enterprise 1500. 00 when I turn in the car for my deductible from insurance. I read there is a 65 million$ law suit pending to gm for these faulty transmissions, yet they don’t feel responsible to pay our expenses for something that is their problem, not ours, but they have made it my problem, and I am shouldering all the financial burden of this, their faulty transmission. We need help, we are now broke and now can not afford to pay for the rental, or our repair deductible, or our car payment. We don’t make that kind of money. My husband is the only one that works full time. We need help, and no one wants to listen or seems to care. We are broke! thank you for listening. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Transmission shudders from 20 to 60 under light acceleration. Took to dealer and said that needed different oil. Dealer stated that a common issue with these vehicles. Cost $500 to replace oil to proper oil.

What component or system failed or malfunctioned, and is it available for inspection upon request? it appears to be a piston failure, as there is compression and diesel in the crankcase. Engine is still in the vehicle but once removed it will be available for inspection if needed. How was your safety or the safety of others put at risk? power loss on a busy highway requiring lane changes without available engine power is dangerous. Has the problem been reproduced or confirmed by a dealer or independent service center? not yet has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? no were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? p0266 code and engine light set immediately after the failure. But there were no warnings prior.

Shutter or vibration issue regardless of speed even when cruise control is active. Took it to the dealer and they said the wrong fluid was installed at the manufacturer. Also told me my extended warranty would not cover it since it was not a mechanical issue. I saw that gm has issued a service bulletin 18-na-355. However, I have yet to discover from any online account that this fixed the problem. Why is there no recall for this common issue.

The vehicle stuttered upon acceleration between 20mph and 35mph. After the 2018 chevy Colorado was taken into the chevy dealership for inspection, the torque converter failed at roughly 76,000 miles. A bad torque converter can potentially cause an accident. It can lead to engine revving issues, sudden speed changes, which can be dangerous while driving. The torque converter failed and left metal shavings in the transmission causing the transmission to need replaced as well. This was diagnosed by the chevy dealership and has a repair ticket of over thirteen thousand dollars. ( $13,000. 00 ) which most people can't afford to absorb. After a quick google search, this appears to be a common problem. There should be a recall to fix this issue.

“service trailer brake system” won’t turn over but will crank transmission shifting very hard around 3rd and 4th gear.

The key will not come out of the ignition when the vehicle is in park. This presents a safety issue where the driver cannot leave the vehicle because the key is stuck in the ignition. The problem has been reproduced by the dealer and found to be a faulty transmission control assembly. The faulty transmission control assembly has now been replaced twice on my vehicle, once at 19,000 miles and again at 33,000 miles. There were not any warnings or messages, just one day the key won't come out of the ignition.

When accelerating there is a shake. From diagnostic it seems there is an issue with the torque converter.

Transmission is slipping and vibrates while driving. Delayed acceleration.

While driving, there is noticeable “shudder” that seems to feel like an issue with the transmission when it is shifting (automatic transmission). Research online shows this to be a consistent issue and concern with many owners of the 2018 chevy Colorado. Having this shudder has not had a solution by the several mechanic shops I’ve been to. Nobody seems to know what is causing this issue, but with many owners having this same problem there must be something that Chevrolet can do to resolve this issue. We bought the vehicle brand new in 2018, and it is now paid off, but this shudder while driving has happened since we have owned the vehicle. It seems to be more prevalent while driving between 30 mph to 60 mph. The shudder happens during ever drive we take. We have the vehicle maintenance performed on all of the recommended intervals for oil, fluids, tires, brakes, etc. This is definitely something that should be a recall.

Transmission is shuddering, some jerking starts and stops.

Clunking in the transmission, when slowing down it feels like you got rear-ended. Then when accelerating from a stop the transmission seems to slip and then catch and then engages and shoots you forward, feels like it surges forward. TSB to replace the transmission fluid was done at about 18k miles, it didn't fix its still doing it now. It did it since day one from the factory and the TSB didn't correct it.

Suddenly losing power, shifting hard, slipping between gears, causing shuddering while driving, and surging forward while accelerating.

Car begins to shudder intermetiently if driven over 50 mp due to faulty factor installed transmission fluid, can cause panic when unaware of what is happening. Also can marginally effect handling.

The contact owns a 2018 Chevrolet Colorado. The contact stated while driving 40-60 mph, the vehicle would shudder while depressing the accelerator pedal. There was no warning light illuminated. The contact stated that she was able to continue driving. The vehicle was taken to an independent mechanic, where it was test driven and diagnosed with transmission failure. The mechanic referred the contact to the dealer. The vehicle was then taken to the dealer, where the transmission fluid was flushed and replaced with hd transmission fluid per gm technical service bulletin number:18-na-355. The dealer then advised the contact to drive 500-1,000 miles to allow the new hd transmission fluid to circulate the transmission. The vehicle was not repaired at this time. The manufacturer was not notified of the failure. The failure mileage was approximately 22,589.

I have a 2018 Colorado 4x4 with 51k miles. Purchased with 28k. When driving at normal highway speed, get drive train shudder when increase torque is needed (hill, ramp, etc. ). Only happens in overdrive. When tow/haul is activated shudder does not occur. It feels like transmission and/or drive shaft is about to fall off. I have not attempted repair due to numerous concerns voiced on this site and class action lawsuit now in progress. No warning lights or messages.

My 2018 Colorado z71 (40,000 miles) suffers from transmission shudder intermittently. Dealer took it for a 14 mile test drive and was unable to duplicate. Blamed it on the tires. Refused to flush transmission fluid in accordance with gm TSB 18-na-355. Shudder becomes worse when trailering boat. Known issue to gm, however, dealers refuse to perform the solution provided by gm in the absence of a recall.

When traveling at any speed usually between 1200-2200 rpm there is a rumble strip/ vibration feeling coming from the vehicle most notably around 35-45 mph but happens at all speeds. I took it to my local mechanic and it was not a suspension, tire or drive shaft issue. I was informed it seems to be coming from the transmission. Upon looking on other forums about this issue it seems to be a common problem with the 8 speed transmissions on the Colorado's. I still have been unable to fix this issue. No indicator lights are on, engine runs fine its only when traveling when the engine is between 1200-2200 rpm.

I have the 2018 chevy Colorado, I got it at 22k miles and it had a slight shudder, it got a bit worse so I brought in to a dealership and had the transmission fluid changed at 50k miles. It made it better but can still feel the shutter and a slight jerk while shifting yet.

Problems shifting shaking and vibration at higher speeds very noticeable while pulling a trailer 11449007 reference number.

Transmission indicated drive when actual gear was reverse 05.

The contact owns a 2018 Chevrolet Colorado. The contact stated that while driving approximately 35 mph, the vehicle shuddered and started shaking abnormally. There were no warning lights illuminated. The vehicle was taken to the local dealer where the transmission was flushed and the vehicle was diagnosed. The contact was informed that the torque convertor needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure however, no additional assistance was provided. The approximate failure mileage was 82,630.

Ignition key gets stuck and will not come out of switch when vehicle is put in park and turned off. Must restart vehicle several times and engage transmission from park to drive or neutral several times before the key will eventually come out.

My 2018 Chevrolet Colorado is having transmission issues. It started at 90,000 miles and is now getting worse. The transmission stutters at various speeds and is very pronounced while going up an incline. I have taken it in several times to a chevy dealership only to be told nothing is wrong and no warning lights are on. Finally and just this week I have a dealership that is saying a code came up saying the transmission fluid needs to be change since they receive a service technical bulletin saying the wrong transmission fluid was original installed and needs to be replaced. The repairs are at my costs and it just doesn't seem right. Is there anything I can do?.

It trys to constantly shif gears and when it does finnally shifts it starts to shutter bad have to pull off the road and shut it off sometimes it will stop it and sometimes it doesn't it very annoying and can't be safe or good I know that this specific transmission has a recall but for some reason my truck didn't I haven't even made my first car payment I noticed it the very first day I took it home the service porter said I had it in for wheel drive when it wasn't than blamed it on the tires . The dash lights go out . The radio changes stations werth out me even touching the steering wheel.

The contact owns a 2018 Chevrolet Colorado. The contact stated while driving approximately 45-65 mph, the vehicle would shudder. The dealer was made aware of the failure and referred the contact to the manufacturer. The vehicle was not diagnosed nor repaired. The manufacturer was made aware of the failure and opened a case. The manufacturer referred the contact to the NHTSA to file a complaint. The failure mileage was approximately 65,000.

Upon acceleration the truck felt as if we were riding over rumble strips. No lights/warnings. Although this was ongoing whenever driving, the truck continued to operate normally otherwise. Searching the internet noted a problem with this year/make/model with the transmission - one search result suggested submitting the information here. The dealer flushed the fluid today and told us it might take up to 200 miles for the shudder/rumble to stop.

When driving over 40mph there is a very pronounced shuttering/vibration that occurs. Assume it's caused by the transmission based on many complaints I've read on the internet.

2018 chevy Colorado zr2, 21000 miles. Engine shut down while driving in motion on road. Restarted twice and shutdown again twice. Check end engine light came on and traction control said it was disabled. Started third time and put in drive. Wouldn't put power from engine to drive train. 4th start, put in drive and limped back home. Was towed to closest dealer and they cleared error codes with diagnosing. I scanned codes before being towed and error codes were u0700 and u0100. After 3 days of no comms from 1st dealer had 2nd dealer pick up via tow truck. They said 1st dealer cleared codes and could not duplicate. Picked up truck and ran fine for a week, then had same issue on busy road. Had to restart, engine light came on and limped back home. Scanned codes and received same u0700, u0100. Dealer is having tow truck pick up truck to diagnose and repair. This is a serious issue causing truck to shut off while driving and not knowing if it will restart and have power to drivetrain.

Ignition switch fully won't turn to off position. Engine does turn off, but key can't be removed. Happens frequently and so far, starting it, putting it into drive or reverse and move a bit, then back into park will work. At some that might not work and I'd have to leave the key in the ignition and leave the truck unattended. I could still lock it, but if some kids see it or break into it, they could drive it away. Chevy knows about this. There is a service bulletin #pi1429b.

The truck vibrates , stutters some times when driving. Went to dealer he said it has been happening in trucks. He said thicker trans oil should fix it. Is this just a band aid for a bigger problem. Would like your view. Thanks.