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Typical Silverado projects
KME Vehicle Engineering has undertaken engineering work across Silverado 1500, 2500, 3500 and 4500 vehicles, covering a range of vehicle configurations and modification types. Each vehicle still needs to be assessed individually because the applicable engineering requirements and certification pathway depend on the vehicle configuration, modification scope and registration jurisdiction.
Silverado vehicles can fall into either the light- or heavy-vehicle engineering pathway depending on their GVM and configuration. KME Vehicle Engineering has experience across both.
Silverado owners commonly seek engineering for GVM changes, towing/GCM issues, heavy-vehicle category changes, seating changes, suspension/lift modifications, axle changes and other bespoke modifications.
Common Silverado modifications - what do you need certified?
GVM upgrades
Typical upgrades
Silverado 1500: 3,300 → 4,000 kg
Silverado 2500: 5,148 → 5,500–6,000 kg
Silverado 3500: 4,490 kg → 6,700 kg, Silverado 4500: 8,000 kg → 10,400 kg
Vehicle category
NB1 → NB2
Important when mass thresholds change.
GCM & Braked towing capacity
Relevant when the combined vehicle-trailer mass needs to be assessed. Assessed separately and is specific to vehicle type.
Gooseneck hitch certification
A gooseneck hitch allows a Silverado to tow specialised heavy trailers using a coupling mounted in the tray rather than a conventional rear towbar.
Suspension and Lift
Lift kits, coils and airbags
Often part of already modified Silverados and mass rating related builds
Axles, wheels and tyres
Rear axle upgrades and non standard packages are changes that can affect ratings and compliance
Example Silverado projects by KME Vehicle Engineering
Chevrolet Silverado 2500 Gooseneck Hitch Certification — NT
Towing, Heavy vehicle, Vehicle Modification
Engineering certification of a Chevrolet Silverado 2500 gooseneck tow-hitch installation in the Northern Territory under VSB 6 Section P. The vehicle-specific installation was inspected and assessed; GVM and GCM remained at their original ratings.
Chevrolet Silverado 2500 BDS 3-inch Lift & 5,534 kg GVM — WA
GVM, Suspension, Heavy vehicle, Vehicle Modification
Engineering certification of a Chevrolet Silverado 2500 fitted with a Fox BDS 3-inch suspension kit and 35-inch tyres, with GVM re-rated to 5,534 kg in Western Australia. Assessment included non-standard wheels and tyres, suspension, braking and towing-system checks under VSB 6.
Chevrolet Silverado 2500 Canopy & 5,500 kg GVM Engineering — WA
GVM, Heavy vehicle, Vehicle Modification
Engineering certification of a Chevrolet Silverado 2500 canopy/body modification together with a GVM re-rating from 5,148 kg to 5,500 kg in Western Australia. The project included vehicle-specific inspection, brake testing and ADR/VSB 6 assessment while retaining the OEM suspension and wheels.
Chevrolet Silverado 2500 Suspension & 5,800 kg GVM Upgrade — WA
GVM, Suspension, Heavy vehicle, Vehicle Modification
Engineering certification of a Chevrolet Silverado 2500 HD GVM upgrade to 5,800 kg in Western Australia, with Bilstein suspension components, additional rear leaf support, airbags and non-standard LT295/70R18 wheels and tyres assessed under VSB 6.
Chevrolet Silverado 2500 NB1 to NB2 & 5,171 kg GVM — WA
GVM, Suspension, Heavy vehicle, Vehicle Modification
Engineering certification of a Chevrolet Silverado 2500 category change from NB1 to NB2 with GVM re-rated from 4,536 kg to 5,171 kg in Western Australia. The vehicle used a Rough Country 3-inch Vertex suspension kit, 35-inch tyres and revised GVM/GCM ratings assessed under VSB 6.
Chevrolet Silverado 2500 GVM Upgrade to 5,500 kg
GVM, Heavy vehicle, Vehicle Modification
Engineering certification of a Chevrolet Silverado 2500 GVM increase from 5,148 kg to 5,500 kg, including front and rear suspension, axle and fuel-tank modifications.
Model | Starting GVM | GVM upgrade available | Same day approval | Approx cost ($) |
|---|---|---|---|---|
Silverado 4500 | 8,000 | 10,400 | yes | $5490 |
Silverado 3500 | 4,490 | 6,700 | yes | $5490 |
Silverado 2500 | 4,490 | 6,000 | yes | $5490 |
Silverado 1500 | 3,300 | 4,000 | $1990 |
Typical GVM upgrades we do