2021 Chevrolet Suburban - Electric Vehicle Guide
The 2021 Chevrolet Suburban belongs to a Chevrolet Suburban lineup that Know Your Ride tracks across 32 model years, from 1981 to 2026. It is an all-electric vehicle, so it skips the oil changes, spark plugs and exhaust-system service of a combustion Suburban entirely. It is configured as rear-wheel drive with an automatic 10-spd. The 2021 sits mid-run, with both earlier (1981) and later (2026) Suburban model years also documented.
The high-voltage battery is covered for 8 years or 100,000 miles, separate from the bumper-to-bumper warranty. Routine upkeep centers on tire rotation, DOT 3 brake fluid, Dex-Cool battery/cabin coolant, cabin air filters and brake service rather than engine oil. Know Your Ride lists 14 scheduled maintenance items for this vehicle, the earliest interval falling at 7,500 miles. Documented torque values include lug nut 100 ft-lb.
NHTSA complaints for this vehicle cluster around engine (53), power train (19), fuel/propulsion system (15). A representative report reads: "Had to replace entire engine for same reason other GM engines are recalled for, the lifters and shifting cylinders. This should also be covered under a recall!..." There are 12 safety recalls on record; one covers: General Motors LLC (GM) is recalling certain 2021 Chevrolet Suburban and Tahoe and GMC Yukon and Yukon XL vehicles. During general assembly, a repair....
Estimated annual charging cost runs near $3,400.
Quick Specs
| Battery warranty | 8 yr / 100,000 mi |
| Est. annual charging | $3,400 |
| Tire size | 245/60R18 |
| Coolant | Dex-Cool |
| NHTSA overall | 4 / 5 stars |
| Open recalls on record | 12 |
| Technical service bulletins | 200 |
Common Trouble Codes
- P0300 - Random/Multiple Cylinder Misfire Detected
- P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
- P0171 - System too Lean (Bank 1)
- P0128 - Insufficient Coolant Temperature for Stable Operation
- P0442 - Evaporative Emission Control System Leak Detected (small leak)
- P0455 - Evaporative Emission Control System Leak Detected (gross leak)
- P0700 - Transmission Control System Malfunction
- P0301 - Cylinder 1 Misfire Detected
- U0100 - Lost Communication With ECM/PCM A
Related Vehicles
Part of the free Know Your Ride vehicle maintenance reference. Figures are sourced from EPA, NHTSA and manufacturer data and are for general reference - always confirm with your owner's manual.