2024 Chevrolet Colorado Powertrain & Transmission Problems

Check engine light with codes p0700 and p2796 has been happening for months with multiple failed repair attempts. Vehicle was returned to me by the dealer supposedly fixed. I drove it 15 minutes to the high school for an art fair my daughter was in. They (my family) rode with me home. Check engine light was on again. On the way home, the transmission was acting strange, not shifting properly. About half way home, it got stuck in a gear at 3500 or so rpms and would not shift. I tried the manual shifter, and it didn’t work. Stuck in gear. Concern was that we were approaching a hill when it did this, and I could not get the vehicle to shift to deliver the appropriate level of power I needed to ascend the hill. It thankfully did eventually shift, but it was scary for a few seconds, especially since I had my wife and all three of my kids in the vehicle. I dropped the vehicle off the next morning. It got stuck in gear at 3500 RPMS again on the way to the dealership. Two dealerships have made multiple failed attempts to fix the transmission issues. Several attempts to contact GM have gone without a response. No one in my family feels safe in the vehicle after what happened.

When coming to a stop the vehicle slams into 1st gear raising the RPMs and pushing the vehicle forward even when the brakes are being applied. No warning lights no other malfunction or symptoms. Has occurred this I first purchased the vehicle new in January of 2025. Has almost caused collisions. Never took it to the dealership due to the information I've gathered if was a common issue but I believe it is a major safety concern due to the vehicle lunging forward when the brakes are applied.

I have a 2024 Chevy Colorado Trail Boss that needs an Upper Radiator Coolant Hose. But apparently this is on nationwide backorder because although there is not a recall GM put a bulletin out they are aware of the issue that appears to be a degraded seal inside hose fitting so the whole hose needs replacing. I live in [XXX] and it is not available here and I have called OH, [XXX] , [XXX] and other state dealerships and Noone will sell that part because of the backorder. My truck has 40k miles. And every dealer I called this is a huge issue with these trucks. So it is not a wear issue when it is on nationwide backorder and it'll take 1-2 weeks +/- to get. My warranty won't cover as they say it is a wear part and no recall. So how can there be no recall on a nationwide issue with these trucks. My truck cant be driven right now due to check engine light, low coolant, leaking hose, fan blowing high, no heat and this is all related to this backordered part. Someone told me to report this issue so that is what I am doing now. Again this should be an active recall. Thank you INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Radiator hose failed in under 1.5 Years on 2024 Chevy Colorado. Parts are back ordered for months, this is clearly a manufacture defect that could lead to overheating the engine and engine damage and failure

upper radiator fitting is leaking, Chevy is replacing the radiator and the hose

A few weeks ago the heat started performing intermittently, about half the time only blowing out cold air even with the temperature set to 85. I live in Minnesota and we have had numerous weeks of below 0 temperatures. Lo and behold, I find out there are widespread reports of the O ring seals on the radiator and heater hoses failing and causing coolant leaks. These leaks are significant enough to render the vehicle inoperable and with no cabin heating or cooling. This could lead to life-threatening situations in adverse weather conditions. It could also create dangerous roadside failure situation in heavy traffic, particularly on interstate highways. Dealers are aware of the issue and are currently repairing vehicles under warranty. However some dealers are telling owners that the cooling system is not part of the engine and drivetrain, and therefore is not covered under the original factory warranty if the vehicle has exceeded the initial bumper to bumper warranty limits. Dealers are also telling owners that parts are on backorder due to high demand, and that repair wait times could take weeks. The vehicle is unsafe to operate with a known coolant leak.

2024 Chevrolet Colorado with intermittent safety defect at highway speeds. Vehicle displays P215B along with Service ESC, Service Traction Control, and Reduced Acceleration. Speedometer becomes erratic and the vehicle loses reliable speed signal at highway speed. Dealer kept vehicle for 15 days, stated repairs were made, but the same issue returned within about 2 miles of pickup on the highway. Vehicle was returned to dealer immediately. As of April 2, total days out of service will be 21. I do not believe the vehicle is safe to drive or safe to transport my family in. GM case has been opened. This is an ongoing safety issue involving loss of speed signal and reduced acceleration during highway operation.

Even when new, the truck would abruptly down shift from 2nd to 1st, every now and then. Then with about 3000 miles on the truck its started doing every time, once the transmission is warmed up. It seemed to get better and then started again with about 4000 miles and kept getting worse. It got so bad that the truck would shudder and it almost felt like I was getting rear ended and you could hear knocking from the transmission. I then turned it in the dealer and when I got it back, the dealer stated that they had to replace a valve in the valve body.

2024 COLORADO TB purchased new on [XXX]. About 3 days later with 150 miles logged parked in my driveway I noticed OIL spots and leaking. Drove to dealer and they kept it for around 3 days. Dealer contacted GM to supply data points and information. GM had a bulletin placed for REAR MAIN OIL SEAL AND GASKET failure they attributed to faulty parts from original plant inside U.S. Dealer received authorization and billed warranty pulled tranny (allegedly) and replaced rear main oil seal gaskets to stop leaks. Had truck back in 3 days with much pressure and calls noting it was a brand new truck. A few quirks and lights I'm monitoring NOT related to this noted issue stated. GM was attempting to determine how many trucks these faulty gasket seals affected. Dealer was good about providing rental free and turned truck around quick. Extremely odd and quirky for brand new truck with 150 miles logged but I guess things happen it is what it is. I read all the other blogs and statements noted here so I wanted to include this one. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I bought a 2024 Colorado Trail Boss on May 31 and after a week the truck broke down I made a stop in a T intersection, once I had a clear path I started to accelerate and in that moment the truck jerked and at the same time I heard a loud noise under the back of the car. It felt like if I had been accelerating in neutral and suddenly changed gear to drive. After that, the car continue moving but after a few seconds the truck started to lose power and going super slow I tried to accelerate but the truck did not respond. I was able to pull off the road and stop in a parking lot. after that the truck no longer moved forward or backward regardless of what gear the car was in...the car didn't move again. he truck was towed to a Chevrolet dealer, and after two weeks, the service advisor informed me that the issue was with the transmission valve body. When this happen my family was with me in the truck, Luckily, nothing serious happened and I was able to get off the road.

The contact owns a 2024 Chevrolet Colorado. The contact stated that while driving at an undisclosed speed, the brake pedal depressed to the floorboard and was spongy. Additionally, the navigation system shut off unexpectedly, and the Forward Collision Avoidance warning light illuminated, causing the seat belt to tighten while the vehicle was in park. The contact also received OnStar alerts that the vehicle was being stolen and that the 12-Volt battery voltage had dropped. The manufacturer was not notified of the failure. The vehicle was driven to the dealer to repair the issues, but the failure persisted. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 8,285.

I was driving the vehicle up a mountain, in a 70m speed zone, when the dash board lit up. The vehicle started to decelerate, I pushed the gas petal but it just decelerated. I put on the emergency light and continued to the exit. Stopping in Liberty Pa, at an Exxon station. Called GM roadside assistance. On-Demand Diagnostics stated: ECM-Engine System code P00700. TCM P0658, TCM P2729, and P281D. Odometer reading 3840. Remaining oil life: 49%. Our safety was compromised by the unexpected deceleration of the vehicle and possibly being stranded on the road. Was luck to get off the highway safely. The car was towed to Jack McNerney Chevrolet, Inc. 363 NYS Rt13, Tully, NY 13159 +13156968976. The car has been at the dealer since the night of [XXX]. Have been told that the car is not drivable. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)