The Lane Check

Cars › Chevrolet › Silverado 3500 › 2021

2021 Chevrolet Silverado 3500 problems: engine and transmission complaints and recalls

ELEVATED COMPLAINT SIGNAL
35%
13 of 37 relevant owner complaints are about the engine, transmission or fuel system

35% of relevant owner complaints on the 2021 Chevrolet Silverado 3500 are about the engine, transmission or fuel system. That is elevated. Worth an independent inspection before you commit to one.

Better than 62% of the 1,789 model years we track (2010–2023).

Excludes 3 airbag, lighting and seat-belt recall complaints that would otherwise mask the signal (unadjusted: 33%).

NHTSA data checked October 3, 2026
Share this car

Looking at a specific Silverado 3500?Check its VIN: the full report, quotes about its own engine, and whether its recalls are still open. First report free.

Check a VIN

Does the 2021 Chevrolet Silverado 3500 have transmission problems?

More than most. The pattern is elevated rather than severe. 13 of 37 relevant complaints filed with NHTSA about the 2021 Chevrolet Silverado 3500 concern the engine, transmission or fuel system (35%), and the largest group is filed under power train (7). For comparison, the 2020 scores 50% and the 2022 scores 28%. On a test drive, check for shuddering, slipping, delayed or harsh shifts, or a whine at speed. This describes the model year, not any one car: a well-maintained or already-repaired example can be fine, and a clean model year can still have a bad car in it.

Drivetrain complaints
13
engine, transmission, fuel
Total complaints
40
this model year
Fires reported
1
owner-reported
Recall campaigns
5
1 crashes · 0 injuries

Complaints by component

ELECTRICAL SYSTEM12 · 30%
POWER TRAIN7 · 18%
LATCHES/LOCKS/LINKAGES6 · 15%
STRUCTURE6 · 15%
UNKNOWN OR OTHER5 · 13%
SERVICE BRAKES5 · 13%

The years either side

2010
36%
20 of 64
2011
38%
30 of 104
2012
33%
23 of 91
2013
42%
32 of 90
2014
48%
59 of 134
2015
38%
45 of 134
2016
31%
17 of 61
2017
43%
54 of 139
2018
too few complaints
2019
too few complaints
2020
50%
14 of 28
2021
35%
13 of 40
2022
28%
7 of 27
2023
too few complaints

Manufacturers fix things mid-generation. A bad year next to a clean one is common; the fix usually arrived in between.

Cleaner alternatives

Same car, a better year

Other heavy-duty pickups with no elevated signal

The percentage is each model year's drivetrain complaint share. No elevated signal describes the model year, not any one car; a well-kept example of a flagged model can still be the right buy, and any of these still needs an inspection.

What owners reported

FUEL/PROPULSION SYSTEM02/20/2026
Service engine light kept coming on the dash, and the code came back to a faulty DEF heater. My truck had a reduced power countdown on the dash indicating the truck was going go to into limp mode after x amount of miles. On warmer days the code would go away and there would be no reduced power. The vehicle was diagnose…
ELECTRICAL SYSTEM,UNKNOWN OR OTHER,FUEL/PROPULSI02/08/2026
My 2021 chevy 3500hd diesel had the engine light come on and the service emissions system popped up in the info screen. It said in so many miles speed would be limited. I took it to the dealer and they said the def tank would need replaced because the tank wiring connector overheated and would cost me over 2k.
ENGINE11/10/2025
My 2021 Chevy Silverado 3500 [XXX] Motor began requiring a quart of oil every 3-4 weeks. I took my vehicle to a GM dealer in October 2024 and the stated the couldn't find any issues. Fast forward to December 2024 my motor began reading low compression and saying stop the vehicle. I took the vehicle back and pressured …

Three of 13 drivetrain complaints. The full report shows more, with quotes about the engine in the car you are looking at first.

Recall campaigns on the 2021 Chevrolet Silverado 3500 (5)

SERVICE BRAKES, HYDRAULIC:POWER ASSIST:ELECTRIC:CONTROL MODULE
General Motors, LLC (GM) is recalling certain 2021-2022 Chevrolet Silverado 2500, Silverado 3500, GMC Sierra 2500, and Sierra 3500 vehicles with electronic brake control …
SEAT BELTS
General Motors, LLC (GM) is recalling certain 2019-2021 Chevrolet Silverado 1500 and GMC Sierra 1500, 2021 Chevrolet Suburban and Tahoe and GMC Yukon XL and 2020-2021 Che…
SEAT BELTS
General Motors, LLC (GM) is recalling certain 2020 Chevrolet Bolt EV and 2021 GMC Canyon and Sierra 1500, 2500 and 3500, Yukon, Yukon XL, Cadillac Escalade and Escalade E…

This does not say whether a particular car has an open, unrepaired recall. That depends on the VIN.

Before you buy a 2021 Chevrolet Silverado 3500

Questions people ask about the 2021 Chevrolet Silverado 3500

Does the 2021 Chevrolet Silverado 3500 have transmission problems?

More than most; the pattern is elevated rather than severe. 13 of 37 relevant complaints filed with NHTSA about the 2021 Chevrolet Silverado 3500 concern the engine, transmission or fuel system (35%). Before buying one, have an independent mechanic check the transmission and ask the seller whether it has been repaired or replaced.

Are there engine or transmission recalls on the 2021 Chevrolet Silverado 3500?

NHTSA lists 5 recall campaigns on the 2021 Chevrolet Silverado 3500. Whether a specific car still has one open depends on its VIN.

Which Chevrolet Silverado 3500 years are better?

Among the Chevrolet Silverado 3500 years we track, the 2022 (28%), the 2016 (31%) and the 2012 (33%) have a lower engine and transmission complaint share than the 2021 (35%). Manufacturers fix things mid-generation, so the year before or after can be a different car.

Should I buy a 2021 Chevrolet Silverado 3500?

That depends on the car in front of you, not just the model year. The 2021 Chevrolet Silverado 3500 has an elevated transmission complaint pattern, so treat it as a car that needs proof: service records showing transmission work, a cold-start test drive, and an independent pre-purchase inspection focused on the transmission. A well-kept or already-repaired example can be a fine car; an unknown one is a gamble.

Have the VIN?Paste it and get the full report for that car. First report free, then a 30-day pass covers a whole car search.

Check a VIN

Experimental model-level information. This is not a vehicle inspection, vehicle-history report, financial advice or purchase recommendation. It describes patterns across a model year, not the condition of any individual vehicle.