2021 Chevrolet Suburban Towing Capacity & Payload
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The 2021 Chevrolet Suburban can tow a maximum of 8,300 lbs when properly equipped.
Quick Answer
- Max Towing Capacity: 8,300 lbs
- Max Payload: 1,759 lbs
- GVWR: 7,700 lbs
- GCWR: 15,000 lbs
- Curb Weight: 5,616 - 6,108 lbs
- Hitch Class: Class IV
- Max Tongue Weight: 830 lbs (without a weight-distributing hitch)
Tow Ratings by Engine & Trim
Several factors influence the 2021 Suburban's towing capacity, including the engine, drivetrain (2WD vs. 4WD), and whether the Max Trailering Package is equipped. All towing capacities listed here are in accordance with SAE J2807 standards.
| Engine | Drivetrain | Trim/Package | Max Tow (lbs) | Max Payload (lbs) |
|---|---|---|---|---|
| 5.3L V8 | 2WD | Standard | 7,900 | 1,759 |
| 5.3L V8 | 2WD | Max Trailering Package | 8,300 | 1,759 |
| 5.3L V8 | 4WD | Standard | 7,700 | 1,705 |
| 5.3L V8 | 4WD | Max Trailering Package | 8,100 | 1,705 |
| 6.2L V8 | 2WD | Standard | 7,800 | 1,664 |
| 6.2L V8 | 2WD | Max Trailering Package | 8,200 | 1,664 |
| 6.2L V8 | 4WD | Standard | 7,600 | 1,610 |
| 6.2L V8 | 4WD | Max Trailering Package | 8,000 | 1,610 |
| 3.0L Duramax Turbo-Diesel | 2WD | Standard | 7,800 | 1,647 |
| 3.0L Duramax Turbo-Diesel | 2WD | Max Trailering Package | 8,000 | 1,647 |
| 3.0L Duramax Turbo-Diesel | 4WD | Standard | 7,600 | 1,593 |
| 3.0L Duramax Turbo-Diesel | 4WD | Max Trailering Package | 7,800 | 1,593 |
Note: Max payload varies based on trim, drivetrain, and optional equipment. Always consult your vehicle's door jamb sticker for precise payload capacity.
Tow Package Contents
The Max Trailering Package (RPO code ZM1) significantly enhances the 2021 Chevrolet Suburban's towing capabilities and includes essential components for safer and more confident trailering. This package typically includes:
- Integrated Trailer Brake Controller: Allows for seamless control of electric trailer brakes directly from the vehicle's dashboard. This is crucial for safely bringing heavier trailers to a stop.
- Enhanced Cooling Radiator: An upgraded cooling system helps manage engine and transmission temperatures when under heavy load, preventing overheating during demanding towing situations.
- Hitch Guidance with Hitch View: Provides a clear view of the trailer hitch on the infotainment screen, making trailer hook-up easier. Hitch View adds a zoom function.
- Trailer Sway Control: Part of StabiliTrak, this system automatically intervenes to reduce trailer sway, enhancing stability and control.
- 7-Pin and 4-Pin Trailer Connectors: Provides electrical connections for trailer lights, brakes, and auxiliary power.
- Heavy-Duty Hitch Receiver: A robust hitch receiver designed to handle the Suburban's maximum towing capacity.
- Trailer Side Blind Zone Alert (available): Extends the blind zone monitoring to account for the length of a trailer, providing an extra layer of safety.
5th-Wheel & Gooseneck
The 2021 Chevrolet Suburban is not designed or rated for 5th-wheel or gooseneck towing. These types of trailers require a different type of hitch system that mounts in the bed of a pickup truck and are typically used for much heavier loads than the Suburban is capable of handling.
Weight Distribution & WDH Requirements
For trailers exceeding 5,000 lbs (or as specified in your owner's manual), Chevrolet highly recommends and often requires the use of a Weight-Distributing Hitch (WDH). A WDH helps distribute the trailer
More specs for the 2021 Chevrolet Suburban
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
Battery Size & Group
Group size, CCA, AGM/flooded, dimensions, reset note.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Fuse Box Diagram & Amperage
Fuse box locations, layout, amps, and what each fuse controls.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2021 Chevrolet Suburban Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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