Control module: software
NewRisk. Rear wheel lock up increases the risk of a crash.
NHTSA has logged 42 owner complaints about the 2020 Chevrolet Silverado 3500, most often about the power train. It is covered by 8 safety recalls, and for recall 20V-324 the manufacturer reports only 68% of affected cars repaired.
Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through August 22, 2026. Updated daily.
42 complaints grouped by the system owners reported.
| System | Complaints | Crash, fire or injury |
|---|---|---|
| Power train | 16 | 1 |
| Service brakes | 7 | 0 |
| Engine | 6 | 0 |
| Tires | 5 | 0 |
| Electrical system | 5 | 1 |
| Fuel/propulsion system | 4 | 0 |
| Engine and engine cooling | 2 | 0 |
| Visibility/wiper | 1 | 0 |
| Forward collision avoidance | 1 | 0 |
| 3 other systems | 3 | 0 |
Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.
Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.
Risk. Rear wheel lock up increases the risk of a crash.
Risk. Rear wheel lock-up can increase the risk of a crash.
Risk. An unlatched tailgate may open while driving and result in a loss of unsecured cargo, creating a road hazard and increasing the risk of a crash.
Risk. If a seat-belt bracket is not secured, the seat belt may not properly restrain an occupant in the front-row center seat position, increasing the risk of injury…
Risk. If the diffuser separates from the inflator during deployment, RRAB performance may be degraded, increasing the risk of injury in a crash.
Risk. If a striker wire fractures, the hood may open unexpectedly while driving, increasing the risk of a crash.
Risk. If a striker wire fractures, the hood may open unexpectedly while driving, increasing the risk of a crash.
Risk. A vehicle fire could result if materials ignite inside the vehicle.
Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with Chevrolet.
Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the Silverado 3500 median. How we score
Federal investigations that included the 2020 Chevrolet Silverado 3500, and the recalls they led to.
Recent power train complaints filed with NHTSA, shortened. Personal details are removed.
VIN: [XXX] Make/Model/Year: 2020 Chevrolet Silverado 3500HD, Duramax L5P, Allison 10L1000 Recall: N242454440 / N242454441 (NHTSA 24V797) Description: Vehicle had N242454440 completed May 2026 (TCM software update for harsh shift / wheel lockup). On XXX at 103k miles, vehicle exhibited same defect:…
Since buying the vehicle I’ve had issues with the truck going into limp mode with codes p0700 as well as p0747. I have taken it to the dealership twice now, when it has arrived the codes were no longer there. Every time the truck went into limp mode the transmission would get stuck into 5th gear…
The transmission, without warning, intermittently locks the rear wheels when towing a 13,500 lb 5th wheel RV. It occurs when going uphill and the transmission downshifts to maintain torque. The "D" on the gear indicator on the dashboard also flashes 3-5 times. This is a known issue with the Allison…
Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.