2018 Chevrolet Colorado complaints

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.

The beginning of November my driver side door would not open. There was no warning, and nothing happened to cause this. I took it to the dealership. For $161.00 they told me I would need $980.00 worth for parts, which I had to pay upfront, so they would order them. Needless to say there is only one mechanic that is able to do this repair, so I’m still waiting. My appointment is on January 31. I feel this has been a big hazard, do to no fault of my own. I’m just Grateful that [XXX] I can climb through to still use the truck. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

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

Truck bought in United States for use in US. All dash displays ( child or person in back seat or passenger seat, and gauges, emergency or vital messages, warnings etc) are in a foreign language. I only speak and read english. In addition, may go into mode where it changes channel and volume every few seconds which is distracting. Chevrolet dealer (Valmark) says they want 100-200 usd to diagnose and 2000.00 to replace. Reset did not fix. Vehicles for US should be in common language. Chevy should diagnose and repair free of charge. Screen is locked/frozen and cannot be accessed. Spoke with Ian at chevy hdqtrs who said diagnose fee is up to dealer, i will have to pay. Chevy forums say common problem and chevy won’t repair.

The driver side seat belt does not immediately latch when placed in the seat belt housing. To secure the seat belt the driver must keep placing the seat belt latch into the housing multiple times in order for the latch to secure. When brought to the attention of a local Chevrolet Service Center, their response was to pay >$400 to replace the seat belt housing (near the seat). The service center is Lamb Chevrolet in Prescott, Arizona.

He wiring harness to the 4wd kept coming on which wouldn’t allow me to ingage. Mountain Chevy citified mechanic found a chafing on the wiring harness. After filing it my truck started to light up like a Christmas tree, Stability service, trailer brake service, Locker service, Power streering service and they done turn off. Which is caused by more chafing wires that are to close to components of the engine bay getting to hot. Now my power steering turns off and when driving the truck it kicks on and make me loose control of the vehicle. Big diffect on Chevys manufacturing this vehicle. I’m not able to drive it and now they keep telling me that they don’t have the part or can’t find it.

While driving my 2018 Chevy Colorado with 42000 miles I noticed my vehicles steering would get stuck while making turns on the highway and local streets. The problem was intermittent and was getting worse. I didn't receive any warning lights or codes for this problem but realized I had to bring it to a Chevy dealer to try to resolve the issue because I was afraid to drive it any longer due to steering possibly locking up completely. The mechanic at Island Chevy in Staten Island said the electronic rack and pinion steering gear failed and I had to replace with a new one. The cost of the repair was $2700 dollars. I was very shocked by the price due to age of car, the low mileage and never doing any off road driving. I did have another mechanic look at this problem before Chevy did and couldn't pinpoint the exact issue at the time I brought it in. The mechanic told me to bring it to Chevy to hopefully pinpoint the problem and see if there were any recalls or warranties on it.

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.

The flapper just inside the fuel filler pipe has broken loose, allowing water or dust to enter, potentially causing engine failure.

The braking system did not engaged as expected when suddenly braking in freeway commute. This resulted in a vehicle collision. I believe this issue put myself and others in danger. There were no warning lamps.

The vehicle will not stop unlocking itself. even while moving.

The contact owns a 2018 Chevrolet Colorado. The contact stated while driving 30-35 MPH, the contact smelled an abnormally strong fuel odor. The odor became more intense while driving. The contact stated upon arriving at the residence, the fuel gauge indicated that the fuel tank was empty. Additionally, the contact noticed a puddle of gasoline underneath the vehicle. There was no warning light illuminated. The vehicle was towed to the dealer, who informed the contact that the failure could be related to the fuel pump. The vehicle was not diagnosed nor repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 52,000.

Transmission is shuddering, some jerking starts and stops.

I along with other people who own this model of truck with the diesel engine around 60,000 to 70,000 Miles have part number 55488542 which is the fuel feed line that rubs up against the AC line and starts to leak fuel. https://www.coloradofans.com/threads/2016-diesel-canyon-severe-fuel-leak.410108/ I along with others have numerous complaints to the Chevy dealership they said this is a common issue because of the type of line that was used and placement that it rubs up and down and since it's a diesel and vibrates a lot and basically the hose is going against the AC Muffler which is a canister and rubs it until there is a hole from rubbing. The link I added to this is one of many. This is dangerous it is fuel it is pouring out and it is in contact with hot parts of the engine

On 4/19/2023, upon turning on the truck, putting it into gear and starting to very slowly move forward a Power Steering Warning/Drive with caution came on. There was no power steering and it required driving very carefully because of the inability to make turns. The truck had to go in for service. Power steering is not covered under the power train warranty, which you would think it should be. The repair required a motor kit, steering gear, belt and reprogram/sensor reset. The truck had less than 40,000 miles on it, and it cost $1533.00

Ignition interlock will stick and not allow key to be taken out of the ignition. The truck is off, in park and parking brake applied but key is stuck in ignition. Have to rapidly push shifter lever button until it unlatches and the key is able to be taken out. Occurs 2-3 times per week.

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.

Power steering unexpectedly toggled on and off very quickly causing very uneven cornering. After this the truck then drove normally for a couple of miles before happening again at slow speed. Mechanic was able to recreate but due to the intermittent nature cannot diagnose it. Seems like there was an issue with 2015/2016 Colorado's that sounds similar with a faulty electrical connection. Have gone 1 day now without the issue repeating but unsure if/when it will happen again.

UNABLE TO REMOVE KEY FROM IGNITION SWITCH. ENGINE SHUTS OFF, BUT IGNITION IS STILL ON. IN SHORT TIME THE BATTERY GOES DEAD. PER THE DEALER, THE CUSTOMER NEEDS TO LIFT HOOD AND DISCONNECT NEGATIVE BATTERY CABLE TO PREVENT THE BATTERY FROM DYING AND THE VEHICLE NEEDING TOWING. MOST CUSTOMERS UNDER THE HOOD WITH WRENCHES IS A DANGEROUS SITUATION. PER THE INTERNET THIS IS COMMON WITH THIS VEHICLE, AND THE DEALER FIX IS NOT A SURE CURE. GM NEEDS TO INVESTIGATE AND COME UP WITH A PERMANENT FIX THAT DOES NOT LET CUSTOMERS STRANDED, CARRYING WRENCHES, AND WORKING UNDER THE HOOD TO KEEP GOING, ESPECIALLY AT NIGHT.

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.

For at least 6 months now My ignition key goes in and starts normally. When parked the key goes back one notch and freezes. Cannot pull it out or put back to off position. This is sporadic. Have been to 2 Chevrolet dealers who simply stated they cannot duplicate the issue so they don't want to throw parts at it. On you tube there are many videos of how people are handling this.. If I had a emergency run to a hospital or something of a time constraint I cannot do it because i am stuck for at least a half hour until it moves again. Now about $280.00 into diagnostic fees that Chevrolet claims they know nothing about so they are doing nothing. Imagine that click the key 5 or 6 times video it and then say cannot duplicate the problem. I hope this leads to someone acknowledging an issue. Thanks

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. 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.

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

Seat belt buckle receiver occasionally does not “click” all the way and takes at times multiple attempts to connect. No light shows that it is disconnected. I’ve noticed it with both front seat belts receiver. Unknown with rear seats I’ve never sat in my vehicles backseats to confirm it there. Unknown if I can get them inspected upon request at my local dealer as they have not been the best with customer service. Seat belt not working correctly doesn’t give me confidence in it in the event of a collision. Unknown if reproduced No inspection has been conducted as of the time of this report. Will move to get that done asap.

We reported issues with our thermostat to our dealer back in September of 2022. The vehicle would not defrost or heat. We were then told the thermostat required replacements but there was no part in existence and they would notify us when it became available. After following up numerous times with no actionable timeline from the dealer we consulted with a secondary mechanic who confirmed the issue was related to a thermostat sensor malfunction and would require a replacement thermostat. Again we were told that the item was not available from GM and we would be contacted when more information was available. A SPAC case was created by our dealer in October of 2022, notifying the system of the urgent need and our dealer has followed up numerous times that GM has not provided any timeline for replacement. I have also filed a separate claim in January of 2023 to GM customer service notifying them of the ongoing issue and escalating to upper management. I have not heard back on mitigation or rectification plan for our issue. This ongoing issue is a major safety concern that has rendered my vehicle unfit for operation. I am unsure why GM is not making this major safety concern a priority because we are now in the middle of a Chicago winter we’re temperatures are regularly below freezing. I cannot defrost my windows or maintain a safe cabin temperature. This is unsafe for me to operate let alone use the vehicle to transport my child because of the immediate danger it would place her

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

The HVAC module temp door is cracked, as previously seen in the 2015-2016 recall for Chevrolet Colorado’s and GMC Canyons. This forces the temperature to be 33 degrees F colder than requested. This poses a risk to those that live in cold winter climates, as there is no heat available in the vehicle.

A/c lines near driver side wheel well has chafed through fuel line and wire harness.Causing a couple thousand dollars in damage.Nor warning indicators leading up to either incidents. My chevy dealership mis diagnosed it twice and has now found the issue. Fuel lines leak can cause fires and as far as the electrical issue I've been left stranded with my 3 year old daughter a couple of times..Have looked up forums and many people have had the same issue.

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.

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

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?

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.

The wiring harness was touching the air condenser line. The line gets hot when air conditioning is used. It melted causing my truck to throw a lot of random alarms. It also would turn my cruise off and make it down shift all of a sudden startling me. Melted wires are also a fire hazard. There is a bulletin for wire harness chafing that GMC knows about this issue. If it had melted something major and shut my truck down while driving down the interstate it would put me and anybody around me in danger. It was wired back together but is still not fixed. Might need a new wiring harness.

Transmission indicated drive when actual gear was reverse 05

Occasionally the ignition key cannot be turned to the OFF position and cannot be removed. After shifting to Park, the key can be turned to position 1 (ACC) but will not turn all the way to position 0 (OFF) and therefore the key cannot be removed from the steering column. So far I have been able to temporarily resolve the problem by re-starting and stopping the engine several times. The number of times the cycle must be repeated is not consistent. On one occasion, the driver was not able to remove the key so the key was left in position 1 for several hours. This resulted in a drained battery and the truck would not start. We needed a mechanic to come by and jump start the truck.

I put my car in reverse and the back up camera on the head unit is blue

Electrical problems with Chevrolet Mylink display. A variety of errors include backup camera flashing on at highway speeds, hands free phone calls put on hold, navigation screen flashing random inaccurate destinations. These distractions impair safe operation of the vehicle. Dealer verified issues but could not perform diagnostics on a timely basis. Issues continue.

The steering just stop work and started jerking?

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

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.

While driving my truck overheated and Antifreeze was leaking inside the car. Due to the antifreeze leaking my windows were fogging up pretty quickly and I couldn’t see. Therefore having to stop in the middle of the road cause I could t see almost getting hit. Now I can not drive the my car due to the smell making my kids and myself sick. It also states in the paper work after buying my truck new that this is a defect part. This would be a heater core. Thanks for this heater core being inside the truck I almost was hurt.

El vehículo en muchas ocasiones no quiere encender el tablero, se vuelve loco como si quisiera apagar ah blim, queda mucho ah, las luces del tablero y la radio se encienden y apagan

The key repeatedly will not turn to off position and cannot be removed from ignition. This results in my having to leave the key in the ignition. IE: at the grocery store, at the post office, at the drug store etc. I have taken to dealership. The first time for 2 days and they said they could not duplicate the problem. The 2nd time it happened in the service drive. The service advisor saw it but the technician said could not duplicate. This could result in stolen vehicle or dead battery depending how long I have to leave in the on position. The TSB on this says replace shifter control assembly.

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.

Key cannot be removed from ignition. I bought my truck 6 months ago and it’s been in the shop 3 times bc I can’t remove my key. Last time it left me stranded at my veterinary clinic at 1 AM after dealing with an emergency because the battery died. It appears as though I am not the only one having this issue

Ignition Key can't be removed and will not rotate all the way to the off position. Have to leave key in the ignition and the door unlocked. It does not do this all the time, but enough to know GM has a design problem and should figure out a solution and issue a recall. When I go on line I find that this seems to be a common problem with a lot of colorado owners.