2020 Chevrolet Impala Other Problems

While driving on the highway, you heard a loud bang similar to a gunshot. After inspection, you were told that your catalytic converter had exploded, and the vehicle also has serious issues with the EVAP system, fuel system, fans, and electrical components. These problems have left your car inoperable.

While driving on the interstate, your car started shaking and making noise, then the transmission stopped working properly. A diagnostic test confirmed the transmission is not responding, and there's a transmission fluid leak. You were given no warning before this happened, leaving you stranded on the highway, and the dealer says the repair isn't covered under warranty. The transmission may need to be rebuilt or replaced, which typically involves removing the transmission and servicing or replacing internal components.

Your car's engine RPMs drop while your speed increases, and you may feel the car slow down when you press the accelerator before it jumps forward. Even at highway speeds like 75 mph, the RPMs can drop to nearly zero, causing noticeable lag and hesitation. This suggests a transmission or engine control issue that needs diagnostic testing to identify the root cause.

Your back window is leaking, allowing water to get into your trunk and damage items stored there. The seal around the rear window isn't preventing water from entering the vehicle properly. You'll need to have the rear window resealed or replaced to stop the leak.