Start with a vehicle
Choose a published configuration to fill only the ratings supported by its source. Current verified coverage is limited to the 2025 Chevrolet Silverado 1500 conventional-towing table.
US towing and payload planning
Check the towing limits that real-world loading can change.
TowLoad Guide compares people, cargo, hitch hardware, and trailer weight with the manufacturer limits you select or enter. It shows each available margin and leaves a check unresolved when a required value is missing.
One worksheet, separate limits
See what can be checked—and what cannot.
Enter loaded weights and available ratings to see signed margins for payload, towing, GVWR, GCWR, and hitch or tongue limits without hiding unknowns behind one score.
Use the exact label
The occupant-and-cargo label on your vehicle is more specific than a generic configuration reference. Use the label override when that value is available.
Read every result
A positive or negative margin applies only to the limit checked. Missing payload, GVWR, curb-weight, or hitch information stays visibly Not checked.
Verified reference coverage
51 Silverado configurations, kept distinct.
Every published row preserves its cab, bed, drivetrain, engine, Max Trailering Package, wheel, and ZR2 distinctions. The reference page shows all 51 GCWR and all 51 maximum conventional-towing values in static HTML.
Coverage is intentionally narrow
Other manufacturers, model years, fifth-wheel and gooseneck ratings, and unsupported Silverado values are not yet published. Nothing is estimated to fill those gaps.
Traceable by design
Know where a reference value came from.
Vehicle data passes source transcription, schema checks, independent row review, and a fail-closed publication gate before appearing in the selector or reference page.
How publication works
Read the vehicle-data and calculation methodology, including how corrections are handled.
Documents and revisions
Read the source policy and Chevrolet revision record, including the canonical-link caveat.
Understand the numbers
Learn which rating answers which question.
These source-reviewed guides separate trailer, payload, vehicle, combination, and axle limits before you enter a scenario.
Towing capacity vs. payload
See why a trailer can be below its entered tow rating while the truck is above its payload rating.
Tongue weight and payload
Follow tongue load through payload arithmetic without counting it twice in a hitched scale measurement.
GVWR, GCWR, and GAWR
Match each manufacturer rating with the actual loaded weight needed for that comparison.
Common questions
Before you calculate
Does a maximum tow rating apply to every truck with the same model name?
No. Ratings can differ by cab, bed, drivetrain, engine, package, wheels, trim, equipment, and loading. Match the complete configuration and confirm the exact vehicle documentation.
Why does payload matter when towing?
Passengers, cargo, accessories, hitch hardware, and trailer tongue or pin weight all consume available payload. A trailer can be below a tow rating while another applicable limit is closer.
What if I do not know a required rating?
Leave it unknown. TowLoad Guide marks the dependent result Not checked instead of substituting zero or an estimate. Vehicle labels, the Owner's Manual, manufacturer guides, and loaded scale weights can supply more-specific inputs.
Does a result certify the combination?
No. Results compare arithmetic inputs with selected or entered limits. They do not account for every equipment, loading, mechanical, road, weather, driver, or jurisdiction factor.