2024 Chevrolet Traverse: engine overheating

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 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 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 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.

Filed Dec 6, 2025 · Fuel system · TX

-The radiator hose malfunctioned and began to leak fluids onto my garage floor for 7 straight days. -My safety as well as others on the road were at risk because at anytime my vehicle could have lost all coolant and overheated. -The problem was confirmed by the service team at my dealership when I dropped it off for diagnosis. -There was absolutely no warning lamps or messages prior to failure. The only symptom was the leaking from under the car on the front driver side. The issues first appeared on Saturday November 29th 2025.

Filed Dec 4, 2025 · Brakes, Engine · TX

Engine overheating light comes on, car leaking fluid. Possible radiator or radiator hose. Unsafe to drive breaks are squeaky and bad.

Filed Dec 4, 2025 · Brakes, Engine · CA

Squeaky breaks Coolant leak Engine heating warning Check enginelight comes on after each gas visit Car sounded super load when engine is running due to constant coolant leaks Car doesn’t feel safe to drive with 4 young kids!

Filed Dec 4, 2025 · Brakes, Engine · NJ

My 2024 Traverse was delivered with defective third-row seat headrests that do not return to their normal upright position after being folded, compromising passenger head and neck protection in a collision. On October 28, 2025, the vehicle developed a coolant leak confirmed by the dealer, but repairs have been delayed due to a national parts backorder, creating a risk of engine overheating or sudden breakdown while driving. Additionally, the front brakes began squeaking excessively about one year into my ownership, and the brake pad wear sensor shows only 18% life remaining at 18,454 miles, which raises concerns about reduced braking efficiency and increased stopping distance. All issues have been reported to an authorized dealer and remain unresolved except for the third-row headrests. These conditions pose significant safety risks to occupants and other road users.

Filed Dec 3, 2025 · Brakes, Engine · FL

Upper radiator hose leak with 20k miles. Coolant reservoir was completely emptied. Hose needed to be replaced on top of a parts not in stock. No warnings to overheating or coolant leak. Also Brakes squeal since day of purchase.

Filed Dec 3, 2025 · Engine · OH

The upper hose is leaking and vehicle is losing coolant