2015 Chevrolet Impala engine problems

Filed Mar 16, 2026 · Engine · 212,000 miles · TX

The contact owns a 2015 Chevrolet Impala. The contact stated that while driving at various speeds, the vehicle stalled. The contact was able to restart the vehicle on several occasions. During other failures, the vehicle restarted independently while rolling forward. During one failure, the vehicle had to be towed back to the residence. There was no warning light illuminated. The vehicle was taken to two local dealers who were unable to duplicate the failure. The vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 212,000.

Filed Oct 27, 2025 · Engine · 172,000 miles · PA · fire

The contact owned a 2015 Chevrolet Impala. The contact stated that while the vehicle was parked, turned off, and unoccupied, the front of the vehicle had caught fire. The fire was extinguished by the local fire department. The fire department indicated that the failure may have occurred due to a mechanical malfunction of the vehicle. The vehicle was consumed by the fire. A police report was not filed. The dealer was not contacted. The vehicle was not diagnosed or repaired. The vehicle was destroyed. The manufacturer was not made aware of the failure. The approximate failure mileage was 172,000

Filed May 16, 2024 · Engine · 136,000 miles · AL

The contact owns a 2015 Chevrolet Impala. The contact stated while the vehicle was started, there was a loud clanking sound coming from the engine. Additionally, there was an abnormal gasoline odor coming from the vehicle. The vehicle was inspected by the contact who became aware of a gasoline leak coming from the engine compartment. No warning lights were illuminated. The vehicle was taken to the dealer to be diagnosed. The contact was informed that the pressure pump needed to be repaired. The vehicle was repaired; however, the failure persisted. The vehicle was taken back to the dealer where it was diagnosed with catalytic converter failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 136,000.

Filed Jun 2, 2023 · Brakes, Electrical · NJ

The stabiltrac light comes on,sometimes I lose power. Sometimes the back up camera doesn’t work. Sometimes the parking brake light comes on the dash. Then ieverything will suddenly go away and everything is fine,only to have the same problems. This has been happening for months. I took it to the dealer multiple times and they are unable to fix it.

Filed Aug 14, 2021 · Engine · IN

Issue with the Transmission malfunctioning. The dealership service the transmission several times. And know the transmission needs replacement after the warranty has expired.

Filed Jul 1, 2021 · Engine · WI

My left hand (front bank) catalytic converter near the cylinder head fell off yesterday at the mounting flange. It landed in/on my fan. I went online to find a replacement part and found GM service bulletin PIP5419a & b first issued in 2016.. That bulletin explains a known "defect" with the weld. The catalytic converter pipe cracks at the mounting weld. the TSB was issued for all Impalas from 2014-2016, all VINS all transmissions, all 3.6l RPO LFX engines. It says that GM is working on a solution for this concern. Why isn't there a recall on this defect? The file I've attached is not from my car but from the TSB. It's very similar to what my cars catalytic converter looks like.

Filed Feb 1, 2021 · Engine, Transmission · 151,345 miles · SC

There is a slight vibration around 20 to 30 MPH as gears are shifting and it goes away...does it repeatedly at same position and everything goes back to normal...no codes or lights on dash happens mostly in motion on inclines and even ground at same speed grouping

Filed Aug 12, 2020 · Engine · 100,000 miles · MI

When accelerating, the vehicle revs to high rpms and a loss of power to the wheels occurs. This happens most notably when accelerating to pass while cruising at speeds of 50mph and up. Check engine light appeared and code p16cf was given and tracked directly to the variable timing oil control valve.

Filed May 13, 2020 · Engine · 104,928 miles · MS · fire

Tl* the contact owns a 2015 chevrolet impala. While driving 20 MPH smoke was detected from underneath the hood. Upon exiting vehicle, the contact noticed oil emerging from engine. The low oil pressure warning light was illuminated. The vehicle was towed to an independent mechanic who stated the rocker arm control needed to be replaced. The contact called herrin-gear chevrolet (1685 high st, jackson, ms 39202 601) 354-3882) whom informed her that the parts were on back order. The manufacturer was not contacted. The failure mileage was 104,928.

Filed Apr 19, 2020 · Engine · LA

Owners of 2014-2015 impalas are not able to get this part call the rocker arm control valve. They no longer make this part to fix the cars. So people who own those model cars are forced to trade in cars that their still paying car notes on. Gmc has not spoke about this matter and left their customers stuck out without warning. We are forced to go back into long term car notes when half of the people almost finished paying off their note. And others have paid off their car that's 5 years old that they can no longer buy. It's very said .