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Transmission and drivetrainPart report

2020 Chevrolet Silverado 3500 Transmission and drivetrain Problems

Complaints
16about this part
Share
38%of 42 total for the year
Median mileage
40,000miles
Trend
RisingComplaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.

NHTSA recorded 16 complaints about the transmission and drivetrain of the 2020 Chevrolet Silverado 3500, 38% of the 42 complaints for this model year. Where a mileage was given, the median is 40,000 miles. 1 of these say a crash was involved, according to the filers. 2 recall campaigns on record are filed under a similar system.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“Dealership told me the throttle body failed in my transmission. I wanted it completely torn down to find the actual point of failure since it did represent the current recall on the truck that hadn't been done because the part isn't yet available. The transmission has been replaced for almost $10,000.00”

NHTSA complaint #11632943, filed 2024-12

“Transmission lock up traveling 45 miles an hour while acceleration up modest uphill grade pulling a 3000 pound trailer. The lockup was severe enough to cause passengers to lunge forward with seatbelt engagement. There was no loss of control of the vehicle; however, we did stop the vehicle to inspect it with no damage observed. We expected to see some. This event would have caused a likely loss of control of the vehicle if the lockup was for longer duration. Vehicle also had prior hard shifts that are still occurring. …”

NHTSA complaint #11624953, filed 2024-11

“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 stuck at 45 mph. The problem with the truck started at 48,000 miles, the truck currently has 60,000 miles and the problem has been more active. With the dealership not wanting to resolve the issue the truck was taken to another shop to try to fix the transmission.”

NHTSA complaint #11748501, filed 2026-07

“I recieved a recall notice from Chevrolet stating they needed to install a software update to the truck which will warn if a potential rear wheel lock up is about to occur due to faulty transmission valve body- which was stated that they do not have a fix for. After software update was installed- I was driving about 35 mile per hour on the trip home, and the truck abruptly downshifted very hard, momentarily locking up rear wheels, and the check engine light came on, and the vehicle message came up stating the vehicle was placed in a reduced propulsion mode(limp mode). …”

NHTSA complaint #11657965, filed 2025-04

“While driving at highway speed in my 2020 Chevrolet Silverado 3500 Duramax, the transmission suddenly failed and locked up without warning. This caused an immediate loss of vehicle function and created a dangerous situation while traveling in traffic. I had my two children in the vehicle at the time. I was able to safely maneuver the truck to the shoulder, but the vehicle was no longer operable and required towing. This failure occurred only a few months after a transmission replacement and follows prior transmission repairs, including a valve body replacement performed by a GM dealership. …”

NHTSA complaint #11714523, filed 2026-01

Related recalls

Related service bulletins

Transmission and drivetrain: other model years

YearComplaintsShare of year
2025325%
20241529%
20231063%
2022311%
2021717%
20201638%
2019523%
2018211%
2017215%
201636%
2015510%
2013519%
201214%
2011517%
200738%
2006917%
200549%
200412%
2003410%
200236%
200123%
200056%
199936%
199857%
1997610%

Other parts of the 2020 Chevrolet Silverado 3500

Brakes
7 complaints
Engine
6 complaints
Electrical system
5 complaints
Fuel system
5 complaints
Tires
5 complaints
Engine cooling
2 complaints
Other or unknown
2 complaints
Forward collision avoidance
1 complaints
Latches, locks and linkages
1 complaints
Visibility (wipers, defrost, mirrors)
1 complaints

← All problems reported for the 2020 Chevrolet Silverado 3500

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 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