Can a GMC Sierra tow
a Roadstar Caravans Sirius?
1500 Denali / AT4 (GMSV) (2024), checked against the manufacturer's published figures.
Yes
The Roadstar Caravans Sirius's published ATM of 3,150kg sits 1,350kg under the GMC Sierra's 4,500kg braked towing rating.
- Braked towing ratingThe GMC Sierra, manufacturer published
- 4,500kg
- Towball ratingThe GMC Sierra, manufacturer published
- 450kg
- ATMThe Roadstar Caravans Sirius, maximum loaded weight, manufacturer published
- 3,150kg
- Ball weightThe Roadstar Caravans Sirius, manufacturer published
- 240kg
Figures are the manufacturer's published ratings.
Yes, this pairing is inside the published ratings
The Sierra has a towing capacity of 4,500kg, which comfortably handles the Sirius (3,150kg).
This is a guide off published figures, not a compliance check.The legal numbers are the compliance plates on your car and the van. Weigh the loaded rig at a public weighbridge to know for sure, then read the ticket.
Towing weights are enforced against the plates on the vehicles, never against a brochure. What the comparison above gives you is the Roadstar Caravans Sirius's published weights next to the GMC Sierra's published ratings, so you know which numbers to look for on the plates themselves.
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GMC Sierra
1500 Denali / AT4 (GMSV) (2024)
Roadstar Caravans Sirius
Price on application
Always check your compliance plate
Online databases use factory-standard specs. They don't know about your bullbar (adds weight), suspension upgrades (can change GCM), or how much you're carrying.
How to find it
Open your passenger or driver door. Look for a silver or black metal plate riveted to the pillar. This plate overrides everything you read online.
Why the numbers move once you load up
The figure most often left out of the sum is payload, which is everything you add after the vehicles leave the factory.
- • Bullbar and winch: both add weight to the front of the car, and it comes out of your payload.
- • Passengers: everyone in the car comes out of its payload, not just the driver.
- • Tow ball mass: this comes out of your car's payload, not just your towing limit.
Always weigh your rig fully loaded.
This pairing works - now get the required safety gear
Since this pairing sits inside the published ratings, ensure you have the required safety gear. Mirrors and a brake controller are mandatory in Australia for this weight.
Towing mirrors
Legally required when the van is wider than your car
See options →Brake controllers
Mandatory for trailers over 750kg GTM
See options →Weight distribution hitch
Keeps the rig level and steering weight on the front axle
See options →Not sure which brake controller suits your car, or whether it already has one built in? Read the brake controller guide
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Other caravans a GMC Sierra can tow
Every van here sits inside this car's published ratings, or close to them.
- Concept Caravans Innovation RS Off Road3,100 kg ATMComfortable
- Jayco Australia Discovery Outback3,066 kg ATMComfortable
- Blue Sky Caravans Sapphire3,014 kg ATMComfortable
- Kokoda Caravans XC Range3,000 kg ATMComfortable
- JB Caravans Gator X3,000 kg ATMComfortable
- Royal Flair Caravans Razor XT3,000 kg ATMComfortable
Other cars that can tow the Roadstar Caravans Sirius
Each one is rated for this caravan, or sits close to the limit.
- GWM Cannon Alpha2.4L Diesel 4WD, tows 3,500 kg brakedComfortable
- Hino 300 Series616 Standard / Wide, tows 3,500 kg brakedComfortable
- Holden ColoradoRG (2.8L Duramax), tows 3,500 kg brakedComfortable
- Holden Suburban1500 / 2500 (V8 Petrol / Diesel), tows 3,400 kg brakedClose
- Hummer H26.0L V8 (Grey Import), tows 3,500 kg brakedComfortable
- Ineos GrenadierStation Wagon / Quartermaster, tows 3,500 kg brakedComfortable
Treat this as a guide off published figures, not a compliance check.The legal numbers are the compliance plates on your car and the van, and where we do not hold a published ball weight we estimate it at 10% of ATM.Weigh the loaded rig at a public weighbridge to know for sure, then read the ticket.
Every figure here describes the two vehicles as they left the factory. Yours has a history since then, and the plates on it are what that history gets measured against.