general problems of the 2012 Chevrolet Impala

I have trouble codes that occasionally come up even after vehicle has been serviced. The vehicle used to drive fine. Now it started miss firing. I was told the problem was coming from the engine compartment/sensors. An obdii diagnosis detects a problem with b camshaft position timing over advanced or system performance bank 2 (p0024). I fear that without the fix, the miss firing can cause an accident. The engine light is illuminated when this happens.

Fuel pump replacement with gm dealership parts provider now car engine doesn't shut off right after key is turned off and car doesn't want to talk gas when fueling then doesn't want to start after fueling.

2/16/2019 (sat 3:30pm) : suddenly lost power when driving at 70 mph on highway 99 near fresno, California. Felt like no gas coming in. Engine was still on, but gas pedal seemed to pump no gas to the engine. Pumping the gas pedal had no acceleration response. Speed continued to drop on the highway, very dangerous! finally, luckily pulled over to the shoulder without mishap. Engine was still on when stopping by the side of the highway, kind of idling at low rpm. Shut off the engine and tried to restart it to hope for the problem to go away. Cranked a dozen times and could not to get engine to continue. Felt like running out of gas. 2/17/2019 sun: the car was finally towed to a nearby dealer. 2/18/2019 mon dealer service diagnosis reported broken "fuel flow control module". The estimate of its repair (part + labor) is near $500 I have asked the replaced module to be saved for investigation. Summary: sudden failure of the fuel flow control module that completely cuts off the fuel without a fail-safe design, nor a warning, for a part not in the regular maintenance list, particularly at low mileage (42,000) exposes drivers to high risk of accidents on the highway. Action requested: it may be a quality-escaped issue on such a module. Failsafe design is needed for 21 century highway safety. I ask NHTSA to request gm to investigate this case to determine the cause of such sudden failure of fuel flow control module on a low-mileage car.

When using e85 fuel in my flex fuel vehicle the check stability control/reduced engine power warning is activated. This occurs when the car is moving. I have contacted my dealer and gm they were unable to help me. There is a gm technical bulletin (pip5385c) on this problem.

The engine goes dead without warning while I'm driving down the road. No lights on or any other indications that it is about to happen. Will not re crank. Realize that it happens when my fuel system is about 60 miles to empty. After putting gas in I can crank it right up and go until it hits around 60 miles to empty and it will go dead again without warning, very dangerous and scary thing to happen in traffic. Dealership technician is stumped as to what it is, they have changed one part and it did not work, engine went dead on him also when he tested drove it, car has been there for almost 2 weeks now and they don't know what to do. I need my car back.

I have a 2012 Impala that I have had since 2015 and a little while after I got it the engine light came on and it said it was the fuel pump control module requested mil illumination and evaporated emissions systems leak detected (large leak) and at times the gas tank sparys back at up if you don't let it sit open for a little bit. I have had these issues fixed multiple times and by multiple mechanics who still can't figure out what's going on.

The contact owns a 2012 Chevrolet Impala. The contact stated that fuel injectors 1, 3, and 5 malfunctioned and fuel traveled straight through the exhaust system. The contact noticed a fuel odor coming from the rear exhaust. The dealer diagnosed that injector ports 1, 3, and 5 needed to be replaced. The contact was advised not to drive the vehicle. The vehicle was not repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 58,168.

Gm service bulletin 3650687.

When driving with the engine at lower than normal driving temperature, driver stops at a stop sign and with hard acceleration the engine surges from full power to dying out as tho fuel starved. This continues in a jerking action. Until; the driver removes his foot from the accelerator and then presses the gas feed again at which time the engine runs smoothly. This has happened on numerous occasions, however the dealership can find nothing wrong as the engine is now at normal running temp. Driver was told the problem is in the throttle body of the fuel system --- help. .

Tl-the contact owns a 2012 Chevrolet Impala. The contact that after the vehicle was started, there was an abnormal noise coming from the rear driver side of the vehicle intermittently. In addition, the contact stated that when the front passenger side seat was occupied, the air bag off warning light illuminated. The vehicle was taken to the dealer but the vehicle was not diagnosed or repaired. The contact stated that when refueling the vehicle, the fuel sensor failed and fuel spilled out as the mpg malfunction warning light illuminated. The vehicle was taken to a dealer but the failure was unable to be diagnosed. The manufacturer was notified of the failure. The failure mileage was 15,100. Ss.

Car cut offs when put into drive car cuts off while driving. Rpm odometer stops working. Check engine light comes on reduce engine power. Stability track and abs stop car from turning. Gm dealer said its battery terminal wires and a new battery changed both and same issue. Fuel pressure sensor keeps going bad replaced twice. Car is choking on to much fuel rotten eggs smell coming from exhaust. Car is very dangerous to drive has cut off on me in traffic to many times now. Once and if problems are ever found their needs to be a recall to prevent injury or death.