Chevrolet Traverse overheating problems

Filed Oct 14, 2026 · Engine, Transmission · PA

2024 Chevrolet Traverse, 2.5L turbo (LK0). The cooling system has repeatedly lost coolant through quick-connect hose fittings. On 4-3-2026, at 36,650 miles, Washington Chevrolet replaced the radiator inlet hose under warranty for coolant loss. After that repair the vehicle kept losing coolant, and I have had to top off the reservoir repeatedly. No low coolant warning or dash alert has ever appeared. On 10-14-2026, at 49,066 miles, the same dealer found the outlet hose at the coolant surge tank leaking, rated it Critical, and quoted $480.30 to replace it. The dealer declined warranty and goodwill coverage. Safety concern: coolant loss with no driver warning can lead to overheating, reduced power, or engine shutdown while driving, including at highway speed. GM has acknowledged quick-connect coolant leaks on this vehicle under Special Coverage N262546590 (radiator inlet hose, 2024-2026 Traverse) and bulletin PIT6494A (the same seal failure on GM's 2.7L turbo trucks). My second leak is at a different quick-connect in the same cooling system, which those programs do not cover. I am asking the federal safety agency to investigate the quick-connect coolant fittings across the entire LK0 cooling system, not just the radiator inlet.

Filed Aug 24, 2026 · Engine · AR

Vehicle had large puddle of antifreeze under drivers front of vehicle. Antifreeze reservoir was completely empty upon opening the hood. There is an active drip of antifreeze under the car as displayed by placing a clean piece of cardboard under the vehicle. There were no indicator lights displaying a problem on the dashboard. Upon using an endoscopic camera, there is an active leak at the hose on the radiator. If I had not noticed the active leak, I would have driven the vehicle and overheated the engine with the possibility of seizing the engine. Vehicle is in service currently at Superior Chevrolet. There is a known issue under Special Bulletin N262546590 for the seal at the quick connect inlet on the radiator.

Filed Jul 17, 2026 · Brakes, Driver assistance · KS

Vehicle: 2024 Chevrolet Traverse Z71 Mileage at first incident: 25,821 My 2024 Chevrolet Traverse Z71 experienced multiple safety‑critical electrical and ADAS failures. The vehicle had a Reduced Acceleration / limp‑mode event, accompanied by a strong antifreeze odor inside and outside the vehicle. Dealer diagnostics on 06/29/2026 and 07/16/2026 confirmed several trouble codes affecting the engine, braking system, and collision‑avoidance systems. The following diagnostic trouble codes were recorded: P3705 – Engine Coolant Pump Control Circuit Low (engine cooling fault) C0609 – Park Brake Actuator / Switch Signal Fault (brake system logic fault)-Active 6.29.26 10:12:43AM U160A – Lost Communication With Serial Data Gateway Module (CAN‑bus gateway failure)-Active 6.29.26 10:12:43AM U197A – Lost Communication With Front Radar Sensor Module (forward collision warning / AEB disabled)-Active 6.29.26 10:12:43AM These faults caused loss of radar‑based safety features, including Forward Collision Warning, Automatic Emergency Braking, and Adaptive Cruise Control. The vehicle displayed warnings and temporarily disabled ADAS functions. The Reduced Acceleration event created a hazardous situation in traffic. The dealer attributed the incident to “low coolant,” but the diagnostic codes clearly show electrical and communication failures across multiple safety‑critical modules. The antifreeze odor continues, suggesting a possible coolant leak or unresolved cooling system issue. The vehicle has been inspected by GM technicians, and the codes were documented on both visits but they say car is fine. The safety systems affected include brakes, engine cooling, electrical CAN‑bus communication, and collision‑avoidance radar modules. I am requesting the federal safety agency to record this complaint and evaluate whether these failures represent a broader safety defect in the 2024 Chevrolet Traverse Z71.

Filed Jul 3, 2026 · Engine, Transmission · TX

I own a 2023 Chevrolet Traverse RS, VIN [XXX]. This vehicle has repeated safety-related failures involving the engine/cooling system, fuel-injector/misfire system, steering-assist warning system, and electronic parking brake system. The vehicle is currently at AutoNation Chevrolet West Austin, dropped off on XXX, and is available for inspection. Soon after delivery, the vehicle began losing coolant and overheating. This was not isolated. Before the engine was finally replaced, there were at least four documented coolant/overheating-related dealer visits or repair notes: XXX. The problem repeated again on XXX, becoming the fifth coolant/overheating-related visit and resulting in GM/dealer-authorized engine replacement after internal coolant-related findings. Dealer records show low/empty coolant reservoir, overheating, fan-running symptoms, almost one gallon of coolant added, no external leak found, coolant dye added, GM TAC involvement, and internal coolant findings. After engine replacement, the vehicle continued to fail. In February 2026, it displayed check-engine light and “Steering Assist Reduced / Power Steering Reduced.” The dealer confirmed misfire and replaced cylinder 1 fuel injector. In April/May 2026, the vehicle displayed a service parking brake warning; the dealer documented left rear parking brake actuator high current. Now, on XXX, the vehicle is again at the dealer for blinking check-engine light, and the dealer advised the code shows another engine misfire. My family’s safety is at risk. Repeated overheating, engine replacement, steering-assist warning, parking brake warning, and recurring misfire create unsafe drivability risk, especially on highways, merging, intersections, or long trips. I no longer feel safe operating this vehicle INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed May 8, 2026 · TX

Back in December 2025 took car in because there was a coolant leak until the car started. Alerting me that it was overheating in the middle of the freeway. I had to find a place to pull over while the car was alerting. With urgent urgent urgent alert to pull over. Took it into dealership and it Turns out it had a coolant hose leak . I took the car in for an oil change TODAY and turns out has a host leak again. The dealer did the inspection and I don’t have the part available to fix it. And this is a brand new car giving me issues. I travel far on weekend so this would be hazzard. The dealer said the water tank low because of the leak. It’s also the rear backseat window would not go Thank you It’s leaking, and that’s a safety issue. Because if there’s Down emergency, we can roll the window down. We also had an issue with the break pad alert system alert me. There was no brakes. It turned out to be in update issue and again I was going to travel on vacations. Those are other issues. I’ve had with the car but the maintenance issue today is at the clothes again is leaking and is a safety hazard because if I’m driving and the car and it overheats.

Filed Mar 14, 2026 · Transmission · RI

Check engine light came on with limited acceleration vehicle, then proceeded to overheat several times having to pull over to the side of the road in very dangerous locations vehicle was brought to dealership and it was determined it was a coolant pump. It was replaced under warranty. I want it to be known that there was an issue as others I have heard our ex experiencing the same.

Filed Mar 14, 2026 · Brakes, Driver assistance · NC

The first component to fail was the brake booster module which controls the ABS, forward collision, adaptive braking, adaptive cruise, traction control system, etc. The malfunction started when the forward collision assist activated to prevent me from hitting a deer in the road. We avoided hitting the deer but all of those lights came on immediately. We contact Friendship Chevrolet the dealer we bought the car from had us bring it in to be checked. They confirmed the defective Module and said that it was a reported issue that GM had it's engineers looking at. They said they would have to wait for the part to arrive, advised that we could continue to drive the car even though there was a major malfunction with the critical braking systems. did not offer any type of loaner to ensure my family's safety. We had to wait for more than 30 days for them to receive the part and complete the repair still driving this unsafe vehicle because we had no other choice considering how high the MSRP & payment is on the vehicle. Once the repair was finally completed we immediately began to notice that the brakes were consistently screeching when in slow moving traffic like car rider pick up line. I reported the issue to the dealership and they gave me the answer that it was due to a more abrasive brake pad being used due to it being a passenger vehicle and it's weight. We continued to deal with the squeaking for months then we noticed a coolant leak. Dealership again said had to wait for part. After they did not contact me back I contacted GM and opened a case. When they got it in I also had them change the brakes out of my own pocket. Now the brakes squeak anytime pressure is applied and when coming to a complete stop they grind so loud you can hear and feel them digging in. GM still says nothing is wrong and brakes are a maintenance charge and are not covered for any reason. I feel the vehicle is still extremely unsafe and my family is at risk of possible crash.

Filed Mar 2, 2026 · Engine · TN

Vehicle overheated while driving on interstate in 32F weather. No warnings lights warning of low coolant - only noticed climbing temperature gauge and cooling fans running at full speed. Pulled over and drove slowly to nearest exit with service station. Found coolant reservoir completely empty but with no obvious leaks. Chevrolet dealer diagnosed leaking radiator hose - typical with numerous social media report of similar issue with the 2024 model year Chev Traverse Generation 3.

Filed Jan 17, 2026 · Electrical, Engine · TX

This has happened two times. Driving down the road between 35-55mph. "Speed limited drive with care" no CEL. Took to dealer, advised with a CEL or no codes nothing they could do for it. Multiple nights I get home and the fan stays running after engine shutdown. Engine overheat within 10 min of drive time. OIL SMELLS LIKE FUEL. This time engine throttles back and nearly caused accident with not being able to merge.

Filed Dec 15, 2025 · Driver assistance, Engine · TX

To date, I have brought the vehicle to the service department four times, primarily due to the check engine light and other critical malfunctions. Below is a summary of the incidents: First Visit (approx July 2024): The vehicle suddenly lost acceleration while I was in traffic, leaving me stranded in the roadway. This posed a serious safety risk. The vehicle remained in the shop for 28 days. Second Visit (September 29, 2024): Multiple warning lights illuminated, and several diagnostic codes were detected. Third visit (do not recall the issue): Will find work orders if needed Most Recent Visit (December 3, 2025): A coolant leak caused the temperature gauge to spike, resulting in the air conditioning shutting off due to overheating. The next day the check engine light came on. I had no warning prior to the guage spiking. In addition to these major issues, the following concerns remain unresolved: Brakes continue to squeal. The dealership advised this is normal and that front brakes wear faster. Reverse sensor activates randomly, causing the brakes to engage abruptly. Also the front crash sensor triggers without any obstruction ahead. The dealership recommended disabling this safety feature. These recurring problems raise serious safety concerns and significantly impact the reliability of the vehicle. The advice to disable safety features is unacceptable and does not address the underlying issues.