2016 Chevrolet Malibu: engine overheating

Filed Oct 16, 2026 · Engine · 66,000 miles · CA

The contact owns a 2016 Chevrolet Malibu. The contact stated that while driving at 61 MPH, the vehicle unexpectedly began idling roughly. The contact stated that a loud noise was heard coming from the vehicle, and the cooling fan cycled on and off. The vehicle was taken to a service center, where it was found overheating. The cause of the failure could not be determined initially; however, the mechanic stated the failure was a known issue requiring a special diagnostic tool. Diagnosis revealed three piston rings leaking at 5 percent and the fourth piston ring leaking at 95 percent. The contact was informed that the piston rings could potentially be repaired if the necessary remedy parts were available for the model year. The failure mileage was approximately 66,000.

Filed Sep 2, 2026 · Engine · CA

2016 Chevrolet Malibu Hybrid LT 1.8L - current mileage 147,059 miles The factory exhaust heat exchanger failed internally, leaking engine coolant into the exhaust system. This caused check engine codes P0401 / P26BE, loss of cabin heat, coolant loss, and exhaust fumes entering cabin. GM has released 4 revisions of this part and all fail the same way, indicating known defective design. The part is currently on indefinite national backorder with no ETA from GM (Order #343585 from GMPartsNow on 08/22/2025 held without ship date). Dealers quote $1,587 and cannot obtain part either. This is a safety and emissions defect: coolant loss risks engine overheating, exhaust leak risks carbon monoxide in cabin, and coolant contaminates catalytic converter. GM discontinued Malibu Hybrid in 2019 without proper fix. This should be recalled. They produced a car, we bought it and now they don’t have the overpriced parts in stock to fix my car and when the parts is backordered, I keep driving it because i can’t work without my car which I very much need, the hybrid battery gets overheated, then they sell battery too and other damages too which will cost thousands to fix. This is a scam!

Filed Jun 9, 2026 · Engine · KY

My car started overheating on my way home. I pulled over to find that there is a hole in my lower radiator hose, which was caused by the lower radiator hose being rubbed against the belt that is turned by the water pump. I had my wife and child bring me coolant on the side of the road where I was broken down. I eventually was able to get my car to my brothers but it required multiple stops and refilling of coolant. Once we got the car jacked up and the lower radiator hose replaced, we found the bottom of the radiator is loose and is pushing the lower radiator hose against the belt that rubbed the hole into the lower radiator hose. I then had my car towed to Dan Cummins in Georgetown Kentucky, located at 1470 Cherry Blossom Way, Georgetown, KY 40324. The mechanic drove my car that I had towed to the shop which damaged the new radiator hose that I had just put on the car. Dan Cummins of Georgetown Kentucky, who is an authorized Chevrolet Dealership, was informed (by me) that some 2016 Chevy Malibu's have been recalled because of a faulty lower radiator mount causing the lower radiator hose to push against the belt which causes the lower radiator hose to get a hole and leak. Dan Cummins suggested that I report my issue because my VIN is not covered by the recall. Authorized Chevy dealer Dan Cummins also suggested that I take my car elsewhere to be repaired while refusing to cover the damage they caused to the brand new lower radiator hose that I had purchased and put on the car. I would like for my Chevy Malibu with VIN [XXX] added to the recall so that I can have my Chevy Malibu repaired by an authorized Chevy dealership at no cost to me for something I did not do or cause. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Dec 13, 2025 · Brakes, Electrical · IL

My 2016 Malibu has a severe EBCM-related safety defect causing all four brakes to drag and overheat (reaching 240°F), leading to unstable handling. This condition mirrors the 2016 Malibu EBCM recall (GM Recall 39440). I sought help from GM. A GM-certified dealer-Monken in Centralia, IL performed a “diagnostic scan” which documented the core hydraulic failure: a constant, uncommanded 6.839 psi residual brake line pressure when the pedal was released. (A healthy system should be near 0 psi) This 6.839 psi is actively forcing the brakes to drag. The dealer ignored their own scientific data and submitted a fraudulent diagnosis of ("rust buildup") to GM, which GM used to deny the claim based on mileage. “Rust buildup” doesn’t create hydraulic pressure. GM is aware of this specific, documented, quantifiable safety defect (the 6.839 psi pressure) and is refusing to investigate it further. I stressed to GM that the vehicle wasn’t safe to drive and that I have a small child who has to ride in the car with me. GM dismissed my concerns by stating the dealership won’t release my car unless its safe to drive. I then had to drive the car 22 miles back home with all 4 brakes dragging. I requested the full diagnostic scan report (that the mechanic confirmed he could provide me with when I dropped my car off there) numerous times and never did I get one. I informed them that I would be filing a complaint hadn’t I received it by a certain time. The new kid in service then did send me screenshots of a generic OBDII scanner where I saw the 6.839 psi. I knew what the issue was prior to taking my car to Monken. I had an independent scan done prior. I only took the car there to comply with GM’s protocol to be eligible for assistance. I am requesting the federal safety agency investigate GM for failure to address a documented hydraulic control safety defect that causes brake dragging and overheating, which is non-compliant with safety standards. I can give further info Please call me for further details.

Filed Jan 18, 2023 · Brakes, Engine · 141,943 miles · TX

The contact owns a 2016 Chevrolet Malibu. The contact stated while driving 65 MPH and depressing the brake pedal, the brake pedal was firm. The contact used the parking brake to slow and stop the vehicle. The contact was able to continue driving to the residence. The vehicle was diagnosed by an independent mechanic, and the contact was informed that the vacuum pump needed to be replaced. The vehicle was repaired. On another occasion, while driving 60 MPH, the vehicle started overheating and smoking with the check engine warning light illuminated. The contact pulled over to the side of the road and turned off the vehicle. The vehicle was towed to the residence. An independent mechanic diagnosed the vehicle and stated that the engine needed to be replaced due to metal fragments from the defective vacuum pump. The dealer was contacted and stated that the vehicle needed to be diagnosed by an authorized dealer. The manufacturer was contacted and stated that the vehicle was not under recall. The failure mileage was 141,943.

Filed May 4, 2021 · Engine · 100,000 miles · CA

Tl* the contact owns a 2016 chevrolet malibu. The contact stated while driving 40 MPH, the vehicle overheated. The contact stated no warning light was illuminated. The vehicle was taken to an independent mechanic where it was diagnosed with the head gasket needing to be replaced. The vehicle was not yet repaired. The manufacturer had been informed of the failure and referred the contact to the federal safety agency to file a complaint. The failure mileage was approximately 100,000.