2021 Chevrolet Suburban Engine Problems
Engine problems account for 96 of 199 complaints (48%) on the 2021 Chevrolet Suburban, the highest share of any model year in this dataset. A related recall (25V274000) covers engine inspection/repair for 2021-2024 6.2L V8 trucks. Median mileage at failure is 95,500 miles.
- Engine complaints
- 96
- 48% of 199
- Crashes reported
- 3
- Fires reported
- 0
- Injuries reported
- 0
- Median mileage
- 95,500 mi
- Related recalls
- 1
Typical engine symptoms owners report
- Engine lifters collapse, causing rattling, ticking, or clicking noises along with bent push rods.
- Vehicles experience sudden engine misfires at highway speed accompanied by traction control, adaptive cruise control, and check engine warnings.
- Engines lose power and downshift or shudder unexpectedly while driving at higher speeds.
- Owners report large oil leaks around the engine and exhaust area shortly after taking delivery.
- Some vehicles shift into park on their own and stall, becoming unable to restart or shift out of park.
- Engine failures are sometimes accompanied by unrelated electrical warning lights and traction control faults.
When 2021 Chevrolet Suburban engine complaints were filed
First complaint May 25, 2021, latest Sep 23, 2026.
Engine recalls for the 2021 Chevrolet Suburban
- NHTSA 25V274000Apr 24, 2025Engine597,571 vehicles
Engine and engine cooling:engine:hard parts internal/mechanical
General Motors LLC (GM) is recalling certain 2021-2024 Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500, Suburban, and Tahoe, GMC Sierra 1500, Yukon, and Yukon XL vehicles equipped with a 6.2L V8 gas engine. The connecting rod and/or crankshaft engine components may have manufacturing defects that can lead to engine damage and engine failure.
Risk: Engine failure increases the risk of a crash.
Remedy: Dealers will inspect the engine, and as necessary, repair or replace the engine. For vehicles that pass inspection, dealers will add higher viscosity oil, install 6 oil fill cap, replace the oil filter, and update the owner's manual. Repairs will be performed free of charge. Owner notification letters were mailed June 18, 2025. Owners may contact Cadillac customer service at 1-800-333-4223, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is N252494000.
Engine complaints by Suburban model year
Raw complaint counts per model year; newer years have had less time to accumulate complaints.
Frequently asked questions
- How common are engine problems in the 2021 Chevrolet Suburban?
- NHTSA lists 96 engine-related complaints out of 199 total complaints for the 2021 Suburban, or 48% of all complaints filed for that model year.
- Is there a recall for the 2021 Chevrolet Suburban engine?
- Yes. Recall campaign 25V274000 covers 2021-2024 Suburban and other GM 6.2L V8 models; dealers inspect the engine and repair or replace it as needed.
- At what mileage do engine problems usually appear?
- NHTSA data shows a median mileage of 95,500 miles at the time engine failures were reported.
- Have engine problems led to crashes or fires?
- NHTSA records 3 crashes tied to engine complaints for the 2021 Suburban and no reported fires or injuries.
- Is the 2021 Suburban worse than other years for engine issues?
- Yes, relative to other years in this dataset — the 2021 model's 48% engine complaint share is higher than every earlier model year listed, though 2022-2024 show even higher shares.