2020 GMC Sierra 1500 Suspension Problems
- Complaints
- 18about this part
- Share
- 4%of 484 total for the year
- Median mileage
- 29,000miles
- Trend
- FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.
NHTSA recorded 18 complaints about the suspension of the 2020 GMC Sierra 1500, 4% of the 484 complaints for this model year. Where a mileage was given, the median is 29,000 miles.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Highway driving engine light started flashing, received codes on service ESC and service parking brake. Truck seemed to loose power transmission started shifting very hard, cruse disengaged,lane keep assist stopped working , brakes and steering seemed to act different . When ignition was turned off loud noises from under truck sounded like brakes releasing with loud clunking noise.”
NHTSA complaint #11328737, filed 2020-06, 1,950 miles“I am writing to formally express my dissatisfaction regarding a significant safety and reliability issue with my 2020 GMC Denali. Specifically, the vehicle is experiencing premature wear and imminent failure of the front ball joints. I expect the suspension components of a premium Denali-trim vehicle to last significantly longer than the 37,061 miles currently on my odometer. Industry standards typically place the lifespan of these components between 70,000 and 150,000 miles. …”
NHTSA complaint #11717405, filed 2026-02“I purchased the 2020 Sierra 1500 because the label on the truck frame states that it can tow 9300lbs. Subsequently, in April 2021, I purchased a 34' Travel Trailer with a max capacity of 8995lbs. In August, I received a notice from GMC that they overstated the towing capacity by 500lbs. The new towing capacity is 8800lbs. GMC's response to my request for a refund was that they were not going to help me. Their solution is that I can be provided a new sticker by the dealer upon request. …”
NHTSA complaint #11432679, filed 2021-09“With out any warning my right wheel had broken when I tried to drive from my dive way to work. Looks like Excessive wear to the front-upper control arm ball joints resulted in ball joint failure and wheel separation. Reported to a dealer. Waiting for the appointment to do full investigation. Separation of a front wheel while the vehicle is in motion increases the risk of a crash. I drive in city and highway roads, nothing rough. Very high risk for lots of lives!!!!!! People can die!!! Need immediate attention!!!! …”
NHTSA complaint #11477894, filed 2022-08“At 8,000 miles I started hearing a clunking noise in my truck when I hit a small bump or back up out of drive way. Brought in and GMC stated it was normal and no issues at walser buick gmc of Roseville. Brought I back again because it was getting worse and could hear it every time I slowed down and accelerated. Then stated they need to order spacer bushings at walser of Bloomington. Then went back for 3rd time and installed them at Bloomington.After 600miles noise was back and is getting worse again. …”
NHTSA complaint #11441231, filed 2021-11Related 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.
- 11015409Feb 25, 2025This service bulletin provides information on Wheel Alignment Specifications, Requirements and Recommendations for GM Vehicles.
- 11015042Feb 20, 2025This technical bulletin provides repair information to correct a customer concern of a squeak and/or clunking noise coming from the rear of the vehicle.
Suspension: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2026 | 1 | 1% |
| 2025 | 2 | 2% |
| 2024 | 3 | 1% |
| 2023 | 3 | 1% |
| 2022 | 2 | 0% |
| 2021 | 10 | 2% |
| 2020 | 18 | 4% |
| 2019 | 10 | 2% |
| 2018 | 11 | 4% |
| 2017 | 8 | 2% |
| 2016 | 15 | 4% |
| 2015 | 17 | 2% |
| 2014 | 24 | 3% |
| 2013 | 10 | 9% |
| 2012 | 4 | 4% |
| 2011 | 9 | 3% |
| 2010 | 3 | 2% |
| 2009 | 4 | 2% |
| 2008 | 3 | 1% |
| 2007 | 9 | 3% |
| 2006 | 11 | 8% |
| 2005 | 5 | 3% |
| 2004 | 4 | 2% |
| 2003 | 2 | 1% |
| 2002 | 9 | 5% |
| 2001 | 1 | 1% |
| 2000 | 6 | 3% |
| 1999 | 7 | 4% |
| 1998 | 1 | 2% |
| 1997 | 6 | 7% |
Other parts of the 2020 GMC Sierra 1500
245 complaintsTransmission and drivetrain
99 complaintsElectrical system
81 complaintsBrakes
55 complaintsOther or unknown
46 complaintsSteering
38 complaintsFuel system
27 complaintsEngine cooling
21 complaintsVisibility (wipers, defrost, mirrors)
15 complaintsForward collision avoidance
14 complaintsBody and structure
13 complaintsVehicle speed control
12 complaints
← All problems reported for the 2020 GMC Sierra 1500
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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