2018 Chevrolet Impala Transmission and drivetrain Problems
- Complaints
- 11about this part
- Share
- 19%of 59 total for the year
- Median mileage
- 84,650miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 11 complaints about the transmission and drivetrain of the 2018 Chevrolet Impala, 19% of the 59 complaints for this model year. Where a mileage was given, the median is 84,650 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“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.”
NHTSA complaint #11362612, filed 2020-10, 71,300 miles“Transmission slipping, rough shift and bucking back and forth. Happens intermittently at low speeds and in stop and go traffic as well as highway speeds and when passing.”
NHTSA complaint #11348753, filed 2020-08, 38,000 miles“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. …”
NHTSA complaint #11746623, filed 2026-06“While driving from work the car did a quick jerk and the STABILITRAK, ABS AND CHECK ENGINE LIGHT ALL CAME ON ALL AT ONCE. As I pulled into my workplace the car lost power to the engine completely while displaying ACTION REQUIRED ON THE LCD SCREEN. The brake and steering wheel became stiff and it was hard to control the vehicle. It took 10 minutes for me to regain power and control over the vehicle that again after leaving work stopped on the highway.”
NHTSA complaint #11477959, filed 2022-08“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. …”
NHTSA complaint #11450878, filed 2022-02Related service bulletins
- 11019516Apr 17, 2025This preliminary informational (PI) bulletin provides information to dealership personnel that may be helpful when addressing underbody component corrosion with customers.
- 11013069Jan 9, 2025This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
- 11011989Nov 27, 2024This service bulletin provides information on the harmful effects of ethylene glycol in transmission fluid.
- 11011205Oct 28, 2024This informational bulletin explains Unscheduled Supplemental Services and the importance of GM Simplified Maintenance Schedules.
- 11010651Oct 10, 2024This service bulletin informs the technician of an alternate lift procedure that has been developed when the lift plate does not fit the top of the transmission case for 6T30…
- 11009756Sep 17, 2024This bulletin provides information on Policies Applicable to All U.S. Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and…
- 11009088Sep 16, 2024This service bulletin provides information on some vehicles that may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be…
- 11006421Jul 24, 2024GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities. The damage is being caused either in the removal process by the technician, or…
- 11005311Jul 9, 2024This service bulletin provides information on Driveline Clunk Noise and what is acceptable and what is considered normal operation.
- 11001321May 16, 2024This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid.
Transmission and drivetrain: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2020 | 2 | 13% |
| 2019 | 5 | 18% |
| 2018 | 11 | 19% |
| 2017 | 12 | 10% |
| 2016 | 16 | 14% |
| 2015 | 16 | 5% |
| 2014 | 39 | 6% |
| 2013 | 33 | 12% |
| 2012 | 27 | 10% |
| 2011 | 64 | 13% |
| 2010 | 67 | 15% |
| 2009 | 68 | 8% |
| 2008 | 91 | 11% |
| 2007 | 80 | 13% |
| 2006 | 108 | 21% |
| 2005 | 52 | 9% |
| 2004 | 47 | 4% |
| 2003 | 30 | 4% |
| 2002 | 36 | 5% |
| 2001 | 57 | 8% |
| 2000 | 52 | 6% |
| 1996 | 11 | 13% |
| 1995 | 2 | 5% |
Other parts of the 2018 Chevrolet Impala
16 complaintsElectrical system
11 complaintsBrakes
8 complaintsEngine
7 complaintsSteering
7 complaintsAir bags
6 complaintsExterior lighting
4 complaintsFuel system
3 complaintsSeats
3 complaintsVehicle speed control
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsWheels
2 complaints
← All problems reported for the 2018 Chevrolet Impala
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology