The contact owns a 2011 Chevrolet Volt. The contact stated that while driving at an undisclosed speed, the contact heard an abnormal whining sound coming from the engine compartment. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was approximately 90,000.

Source: NHTSA complaint ODI #11544532 · view all complaints for this vehicle at nhtsa.gov

The contact owns a 2011 Chevrolet Volt. The contact stated that water was accumulating inside the driver's side taillight assembly. The contact stated that the water caused a short circuit in the taillight, and the passenger’s side turn signal became inoperable. The contact had taken the vehicle to an independent mechanic where it was diagnosed, and determined that the wiring harness for the driver's side taillight assembly needed to be replaced. The vehicle was not repaired. The manufacturer was informed of the failure and referred the contact to the NHTSA Hotline. The failure mileage was approximately 97,000.

Source: NHTSA complaint ODI #11694484 · view all complaints for this vehicle at nhtsa.gov

I was stopped at a red light with my foot on the brake. When the light turned green, I released the brake and the car suddenly accelerated forward on its own, without me touching the accelerator. As soon as the car surged forward, I immediately pressed the brake pedal hard to stop it but instead of slowing down, the car continued to accelerate. It felt like pressing the brake was making it worse. The car was totally out of my control. The vehicle collided with tow truck and even after the impact, the engine was still revving as if it was trying to keep going. I had to shut the car off to stop it completely. There were no warning lights or error messages before or during the malfunction. The front end of my car was damaged in the crash. No one was injured, but the malfunction could have easily caused serious harm or death. This was not user error it was a terrifying mechanical and electronic failure. The car accelerated on its own and the brakes failed or possibly triggered more acceleration. I have never experienced anything like this. After looking online, I found other Volt owners reporting similar problems involving brake assist failure, unintended acceleration, and stuck revving. This looks like a serious pattern that deserves urgent attention. I’m asking the National Highway Traffic Safety Administration (NHTSA) and General Motors to immediately investigate this issue. I want to know if there are any recalls, technical service bulletins (TSBs), or known defects related to brake failure or unintended acceleration in the 2011 Chevy Volt. Please contact me with next steps. This is a major safety risk that could easily result in fatalities if not addressed.

Source: NHTSA complaint ODI #11678156 · view all complaints for this vehicle at nhtsa.gov

MY FIRST PROBLEMS I EXPERIENCE WITH THE 2011 CHEVY VOLT WAS AROUND OCTOBER, 2014. WHEN DRIVING ON THE HIGHWAY AT HIGHWAY SPEED, I RECEIVED A "PROPULSION POWER REDUCED" INDICATION ON MY DASHBOARD AND I WAS NOT ABLE TO KEEP UP WITH HIGHWAY TRAFFIC WHICH RESULTED IN A HAZARD FOR MYSELF AND OTHER DRIVERS. I WAS AFRAID I WOULD BE REAR ENDED OR CAUSE AN ACCIDENT DUE TO MY LOW RELATIVE SPEED. THIS HAS HAPPENED SEVERAL TIMES WHILE DRIVING MY VEHICLE, AT TIMES, NOT ABLE TO GO FASTER THAN 45-55 MPH ON HIGHWAYS WITH 65-75 MPH SPEED LIMIT. I LIVE IN SAN DIEGO CA WHERE THERE IS A LOT OF TRAFFIC ESPECIALLY ON THE HIGHWAY. I HAVE ALSO REVIEW THE LIFT GATE STRUCT "CUSTOMER SATISFACTION" DILEMMA. I HAVE HAD MY HATCH CLOSE ON MY HEAD BUT IT DID NOT CAUSE SERIOUS INJURY. IT WAS MORE OF AN ANNOYANCE THAN ANYTHING ELSE. IT CONTINUES TO BE WEAK, AND SOMETIMES NOT KEEP THE HATCHBACK UP AT ALL. I HAVE NOTICED IT IS WORSE AT LOWER TEMPERATURES (40-50 DEGREES F). LAST BUT NOT LEAST, I RECEIVED A NOTICE FROM GM STATING "THIS LETTER IS INTENDED TO MAKE YOU AWARE THAT SOME 2011 MODEL YEAR CHEVROLET VOLT VEHICLES MAY HAVE INCREASED FRICTION IN THE STEERING SYSTEM. THIS COULD CAUSE THE STEERING WHEEL TO STICK IN THE STRAIT-AHEAD POSITION AFTER DRIVING LONG DISTANCES ON A STRAIGHT HIGHWAY. THE STEERING WHEEL CAN BE TURNED BUT IT MAY REQUIRE INCREASED EFFORT." CONTACTED GM ABOUT THIS NOTICE I RECEIVED AND THE GM REPRESENTED ME SAID THERE WAS NO SAFETY ISSUE REGARDING THIS LETTER. I DISAGREED (HOW IS A STEERING WHEEL LOCK UP ON THE HIGHWAY NOT A SAFETY ISSUE?) AND REQUESTED TO GET OUT OF MY VEHICLE AND INTO A DIFFERENT ONE THAT DOES NOT HAVE THE POSSIBILITY OF MY AND MY FAMILY BEING KILLED BY A VEHICLE DEFECT. AFTER SEVERAL EMAILS BACK AND FOURTH AND GOING TO A CHEVY DEALERSHIP THEY TOLD ME TO GO TO, THE ISSUE HAS NOT BEEN RESOLVED. *TR

Source: NHTSA complaint ODI #10679070 · view all complaints for this vehicle at nhtsa.gov

The contact owns a 2011 Chevrolet Volt. The contact stated that while driving at 35 MPH, the defroster failed to operate as needed. The vehicle was taken to the dealer, and the dealer replaced the heating system module; however, the failure recurred. The vehicle was taken back to the dealer, but the dealer was unable to duplicate the failure. The failure mileage was unknown.

Source: NHTSA complaint ODI #11497799 · view all complaints for this vehicle at nhtsa.gov