2018 Chevrolet Impala: complete transmission failure

5 of the 59 complaints about the 2018 Chevrolet Impala describe complete transmission failure.

owner complaints: 5
of this car's complaints: 8%
recalls: 0

Is there a fix? 49 service bulletins cover this area of the car. See below

Complete transmission failure by model year

2018
5
2017
4
2016
2
2015
3
2014
2
2011
13
2010
4
2009
3
2008
5
2007
7
2006
21
2005
5
2004
7
2003
4
2002
1
2001
17
2000
8

What owners say

Filed Jun 26, 2026 · Transmission · NY

The transmission failed, shifting is no longer smooth. It hesitates and shakes the entire car, and the car slows down to almost a crawl uphill. I understand this is an issue with Chevrolet Impalas. So now I have an $8200 bill for a problem I was never told about, and that GM knew that it existed. So, yes, the issue has been identified, reproduced and confirmed by the dealer. The warning light came on when the issue happened, so it was already too late. The issue began with just over 65,000 miles. So I have a 2018 Impala in almost perfect condition in need of an $8200 before taxes, transmission replacement. I would like some help from the federal safety agency, like requiring GM to pay for the repairs. Thank You very much.

Filed Feb 24, 2025 · Transmission · 128,000 miles · FL

The contact owns a 2018 Chevrolet Malibu. The contact stated that while driving at various speeds, the vehicle hesitated or jerked while depressing the accelerator pedal, with an abnormal humming sound coming from the vehicle. The contact stated that the check engine warning light was illuminated. Additionally, the contact stated that while in reverse(R), the vehicle failed to accelerate while depressing the accelerator pedal. The vehicle was taken to an independent mechanic where the vehicle was diagnosed with transmission failure. The manufacturer was notified of the failure and referred the contact to the federal safety agency Hotline to report the failure. The vehicle remained with the independent mechanic unrepaired. The failure mileage was approximately 128,000.

Filed Aug 28, 2024 · Acceleration, Transmission · 98,000 miles · FL

The contact owns a 2018 Chevrolet Impala. The contact stated while driving 45 MPH, the accelerator pedal was depressed but was inoperable. The contact stated that the vehicle failed to accelerate as intended. There was no warning light illuminated. The vehicle was taken to an independent mechanic and a dealer and was diagnosed with transmission failure. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 98,000.

Filed Feb 7, 2022 · Transmission · SC

I have a 2018 Chevrolet Premier Impala that has started skipping gears at 1st and 2nd while driving. The vehicle shudders when it changes gears. Took vehicle to dealer who informed me that the transmission needs to be replaced already. I haven't received any dash messages or vehicle warnings prior to noticing the transmission problem. I always kept the car properly serviced by the dealer for all routine maintenance requirements. I am the original owner of this vehicle. The car has under 100,000 miles. Dealer informs me that it will take at least a week before they can possibly get new transmission for vehicle. I may be without vehicle for at least 2 weeks minimum.

Filed Oct 4, 2020 · Electrical, Transmission · 71,300 miles · GA

Gears skipping and shruddering between 2nd and 4th gear. Chevrolet dealership recommended engine mounts replaces which was a false diagnose. After further inspection and diagnosing, they revealed that my transmission needs to be replaced for 6200$. I paid the 6200$ and now transmission shifting hard into 2nd gear.