2012 Chevrolet Volt engine problems

Filed Dec 11, 2024 · Engine · MN

Vehicle over-revs in cold weather. Engine runs excessively fast (4250 RPM) at highway speeds and around 3000 RPM when just sitting. Often times if I pull over and restart the car it will correct itself. This results in MPG as low as 22. The internet is full of examples of people with the exact same problem. I have seen no examples of the problem being solved. The engine will operate correctly in warmer weather (above 50° F). I believe it is related to an aging propulsion battery and could be solved by improved programing to accommodate the battery state.

Filed Jul 15, 2024 · Engine, Fuel system · OK

7/6/2024 Was driving 45 mph on a busy road (running only on the gas engine of this plug-in hybrid). Propulsion Power Reduced message showed near the speedometer. My speed was immediately decreased. The check engine light also came on. Despite pressing the gas pedal, the speed could not be maintained and I had to pull off quickly before causing an accident. Luckily, no accident occurred but I fear would could have happened if I wasn't in the right place to pull over quickly. After getting the car towed to a Chevy dealership, they diagnosed the problem as being with the hybrid battery - it needs to be replaced. I don't understand why I had a full tank of gas, was running on gas, and that a bad EV battery would cause ALL propulsion to stop so quickly.

Filed May 14, 2024 · Engine, Fuel system · CA

Vehicle propolusion reduced and engine not available messages were suddenly showing. Check engine light turned on. Suddenly Stalled/stopped in the middle of highway. Safety concerns

Filed Aug 29, 2022 · Acceleration, Engine · CA

I'm constantly receiving a "Propulsion Power Loss" notification on my car. I have brought the car in to a Chevrolet dealer and they refuse to fix it unless I start paying out of pocket costs because the ticket is "closed". This has been going on for about a year since I purchased the car last November and I'm terrified to drive this car since it literally looses power.

Filed Feb 15, 2022 · Engine · 113,000 miles · MD

The contact owns a 2012 Chevrolet Volt. The contact stated that while his son was driving 55 MPH, the vehicle lost motive power. The vehicle was taken to the dealer and diagnosed with engine software failure. The contact was informed that the engine software needed to be updated. The vehicle was not repaired and remained at the dealer. The manufacturer was made aware of the failure. The failure mileage was approximately 113,000.

Filed Feb 9, 2022 · Electrical, Engine · NE

Car suddenly entersinto a no start and stall.this is being repaired by h&h chevrolet in omaha at owners expense.the problem seems to be in a faulty batterycharge sensor. The part is being ordered by h&h service department andis notyet installed.as of 2/9/2022.

Filed Aug 28, 2020 · Engine, Fuel system · 80,000 miles · IN

My car has had ongoing problems with power propulsion, electrical system, and start-up since new and several items were replaced in 2017. I purchased 6 year / 100,000 extended warranty when new. Several items have been replaced. But updates are needed to keep the car running properly. Now the warranty has expired but the vehicle still needs updates to run properly and the dealer wants paid to install updates. This is a scam if the car wont run with out being updated yearly. I have a video of the car in 2017 when I started it up and it sounded as though it was going to blow up. I couldn't shut it off and called onstar to shut off the vehicle. That is when several items were replaced. The car is in the dealership again for another update. 8-28-20. There was an updated performed 11-11-19 and 10-10-18. It seems as though there is always an update being performed.

Filed Aug 5, 2020 · Engine, Fuel system · 57,000 miles · CO

I was driving the car normally in electric mode, and parked it with one mile remaining of electricity. Upon restarting the car a few minutes later, the gasoline engine came on and was revving at a very high rate. In addition, a pop-up message on the dashboard read 'propulsion power is reduced.' the engine continued to rev high and I was only able to achieve a speed of about 30 MPH during my two-mile ride home. Upon parking the car in garage and charging it, the problem disappeared. It was 90 degrees outside when this happened.

Filed Jun 18, 2020 · Airbags, Electrical · 162,000 miles · TN

Tl* the contact owns a 2012 chevrolet volt. The contact stated that while driving at 60 MPH, the reduced propulsion error message was displayed on the instrument panel. The engine revved up and the vehicle stalled without warning. The contact pulled over and restarted the vehicle however, the vehicle failed to accelerate. The vehicle was towed to beaty chevrolet (9615 parkside dr, knoxville, tn 37922) where he was informed that the voltage on the battery was low and needed to be replaced. The contact spoke to serra chevrolet cadillac buick gmc kia (189 stonebridge blvd, jackson, tn 38305) where the dealer discussed trading in the vehicle, but offered no assistance for the repair. The manufacturer was notified of the failure. The vehicle was not repaired. The failure mileage was 162,000.

Filed Jan 12, 2020 · Engine, Fuel system · 130,900 miles · CA

My 2012 chevy volt has completely shut off at freeway speeds, and surface streets on over 15 occasions. The power steering assist goes out, the brake assist goes out and it's very difficult to steer and break the car, I have nearly avoided several accidents, there is no warning that this will occur.the power steering assist goes out, the brake assist goes out and it's very difficult to steer and break the car, I have nearly avoided several accidents, there is no warning that this will occur once I have attempted to safely pull over the car says engine not available, propulsion power reduced, the car will not turn off and it says waiting to initialize on the screen. I have had it towed to my local chevrolet dealership and paid a diagnostic, they have been unable to determine the cause of the problem and they just reset the car by unplugging the battery and tell me that they cannot replicate the issue.this does not happen while the car is driving on his hybrid battery, it only happens when driving in hybrid mode with the gas motor. In doing my own research, I found a recall campaign that describes the exact issue that has been occurring, it even states that the car may not be safe to drive if this occurs. Recall #18v397000. Each time I towed my chevy volt to the dealer it sat there for several weeks to a month, they returned it to me and the next day it died in the road. The car is not safe to drive, the dealer states that they can't diagnose the problem and I fear for my life every time I drive the car because it happens at random.