Stage 1
3,650 kg
- Lift
- 3.5 inch
- Suspension
- Fox 2.5 Performance Series, 200 kg packs, BDS arms
- Payload
- About 1,077 kg
- Wheels
- Factory
- GCM
- 8,150 kg
Chevrolet · car licence
Silverado 1500 GVM Upgrade
A Silverado 1500 LTZ, Trail Boss or ZR2 from 2019 to 2026 starts at 3,300 kg. These federally approved SSM packages raise that to 3,650 kg, 3,850 kg or 4,250 kg. All of those sit under 4,500 kg, so the truck stays NB1 on a car licence. We fit the package as specified at Arundel or Mackay. Stage 2 is ZR2 only, and it drops braked towing to 4,200 kg.
Payload figures use a 2,543 kg factory kerb. A ZR2 has a lower combined mass than an LTZ on stages 3, 4 and 5 because its tow rating is 4,200 kg.
Packages
Stages 1 to 3 keep the factory wheels. Stages 4 and 5 need a wheel rated to 1,250 kg and a 116Q tyre. Factory wheels are rated around 862 kg, which is why they stop at stage 3.
Stage 2 · ZR2
3,650 kg
- Lift
- 2 inch
- Suspension
- Factory Multimatic kept, BDS arms
- Fitment
- ZR2 only. Not an LTZ package.
- Braked tow
- 4,200 kg
- GCM
- 7,850 kg
Stage 3
3,850 kg
- Lift
- 3.5 inch
- Suspension
- Fox 2.5 Elite with DSC, 200 kg packs
- Payload
- About 1,272 kg
- Wheels
- Factory
- GCM
- 8,350 kg on LTZ, 8,050 kg on ZR2
Stage 4
4,250 kg
- Lift
- 3.5 inch
- Suspension
- Fox 2.5 Elite, 200 kg or 400 kg packs
- Payload
- About 1,672 kg
- Wheels
- Rated to 1,250 kg
- Tyres
- 116Q, up to 35x12.5R18
Stage 5
4,250 kg
- Lift
- 3.5 inch
- Suspension
- Fox 3.0 bypass shocks, 200 kg or 400 kg packs
- Wheels
- Rated to 1,250 kg. 116Q tyres still required.
- GVM
- Same 4,250 kg as stage 4. The extra shock does not add GVM.
Compare the stages
| Spec | Factory | Stage 1 | Stage 2 | Stage 3 | Stage 4 | Stage 5 |
|---|---|---|---|---|---|---|
| GVM | 3,300 kg | 3,650 kg | 3,650 kg | 3,850 kg | 4,250 kg | 4,250 kg |
| Payload | 757 kg | 1,077 kg | 1,087 kg | 1,272 kg | 1,672 kg | 1,672 kg |
| GCM | 7,160 kg | 8,150 kg | 7,850 kg | 8,350 kg LTZ, 8,050 kg ZR2 | 8,750 kg LTZ, 8,450 kg ZR2 | 8,750 kg LTZ, 8,450 kg ZR2 |
| Braked tow | 4,500 kg | 4,500 kg | 4,200 kg | 4,500 kg | 4,500 kg, 4,200 kg on ZR2 | 4,500 kg, 4,200 kg on ZR2 |
| Lift | Factory | 3.5" | 2" | 3.5" | 3.5" | 3.5" |
| Suspension | Factory | Fox 2.5 Performance Series, 200 kg packs | ZR2 only. Factory Multimatic kept | Fox 2.5 Elite DSC, 200 kg packs | Fox 2.5 Elite, 200 or 400 kg packs | Fox 3.0 bypass, 200 or 400 kg packs |
| Wheel load | 862 kg | 963 kg | 963 kg | 1,063 kg | 1,250 kg | 1,250 kg |
| Tyre index | Factory | 110Q | 110Q | 112Q | 116Q | 116Q |
| Wheels required | No | No | No | No | Yes | Yes |
| Max tyre | 275/60R20 | 275/60R20 | LT275/70R18 | LT275/70R18 | 295/70R18 or 35x12.5R18 | 295/70R18 or 35x12.5R18 |
What stays in the kit
BDS control arms are in every stage. Leaf rate is 200 kg until stages 4 and 5, which can be 200 kg or 400 kg. Bars, lights and a canopy are outside the package and they consume the new payload.
State-Based Engineering
The federal stages, including the ZR2-only stage, are the legal increase for a Silverado 1500. State-Based Engineering is the off-the-shelf McGaughy's or BDS kit when that approval does not match the truck. The rating is set for the VIN. It is not a stage kilogram.
Signature kits
Off-the-shelf kits
These are the lift kits we sell for a state-based plate. Wheels, tyres, lights and a bar are open on this path. They are quoted with the kit, and they are listed under Add-ons.
Add to the build
Where a stage needs a load-rated wheel, we quote it with the package. It is not approved until the provider signs it off and the load rating meets the figure in the table. The order is an AEV wheel that fits this truck, then the KMC KM733 Impact FFT on an HD 8-lug, then Fuel Maverick or Fuel Vapor in 18x9 or 20x9 at +20. Method is not on this list. Tyres are a BFGoodrich Mud-Terrain T/A KM3 when a size meets the stage load index, or a BFGoodrich all-terrain. Lights and a bull bar sit outside the approved kit. A bar, winch or canopy adds kerb weight and uses payload.
WheelsAEV Salta XR Wheel for 2023+ Colorado/Canyon and 2019+ Silverado/Sierra 1500AEV Salta XR for a 2019-on Silverado 1500. Fitted only after it is signed off for the stage.
WheelsKMC WheelsKMC KM733 Impact FFT when the truck is an HD 8-lug.
LightingKC HiLiTESOutside the approved package.
LightingDiode DynamicsOutside the approved package.
Bull barRugged BullbarsAdds kerb weight. Does not change the approved kit.
AEVAmerican Expedition VehiclesBumper only where we stock one for this truck.
Silverado 1500 GVM questions
Do I need a truck licence?
No. 4,250 kg is still under 4,500 kg, so the 1500 stays NB1 on a car licence. A 2500HD package is the one that crosses into Light Rigid.
Why is stage 2 ZR2 only?
It keeps the factory Multimatic suspension and adds control arms. Braked towing on that stage is 4,200 kg, not 4,500 kg. An LTZ uses stage 1 or stage 3 for a one-tonne payload.
When do I have to change wheels?
Stages 4 and 5. The wheel has to be rated to 1,250 kg and the tyre to 116Q. We quote AEV Salta XR first, then KMC, then Fuel, and we fit one only after it is signed off.
Request a quote Silverado 1500
Tell us the VIN, the stage, and whether the truck is already registered. We fit the approved package as specified. Pricing is on application. Call 07 5500 0095.