Isuzu D-Max GVM Upgrade

Federal and State Compliance

Isuzu D-Max GVM Upgrades – Federal and State Compliance – Build date 06/12

The solution for owners/managers of Isuzu D Max 4×4 vehicles – Cab Chassis/Pick up vehicles (Single Cab, Extra Cab and Dual Cab) who have a need to carry loads to a GVM of 3600kg (up from 2950kg standard GVM).

At the same time meeting the practical and documentary compliance requirements of Work Safety, Police Licensing, Insurance, Lessor’s and Fleet Managers.

Why do Vehicles Require G.V.M (Gross Vehicle Mass) Upgrades?

  • Need to protect Business, Managers from claims for breaches of OH&S rules and employee negligence.
  • Possibility of Insurance companies to void payout if the vehicle is loaded beyond approved GVM.
  • Possibility of litigation under common law if is vehicle operated beyond its legal Load Limits.
  • Requirements to load vehicle and operate safely with weight beyond current Original Equipment limits for heavy and/or remote work.


Using  LOVELLS Springs GVM Upgrade Kit, (Approved By The Department By Department of  Infrastructure, Transport, Regional Development and Local Government, Compliance Plate Approval No. 48580) Help is Avoid These Problems.

What Amount of Increase Should You Expect?

Officially sanctioned GVM Kit provides:

  • GVM to 3600 kg with an increase of 600 kg
  • Load carrying capacity of around 1675 kg (dependent on load bearing accessories)

What Components Come In The Lovells GVM Upgrade Kit

  • 2 x Front Coil Springs – Heavy Duty
  • 2 x Rear Leaf Springs –  Heavy Duty
  • 2 x Front Gas Legend Twin tube, Long Travel Gas Shock Absorbers
  • 2 x Rear Gas Legend Twin tube, Long Travel Gas Shock Absorbers
  • 3 x Urethane bush kits to suit leaf spring eyes and shackles.
  • 4 x Hi-Tensile U-Bolts
  • 2 x Greasable Shackles
  • 2 x Greasable Pins
  • 1 x Federal Compliance plate with revised GVM (Pre-Registration Vehicles)
  • OR
  • 1 x State Compliance GVM Upgrade Modification Plate (Registered Vehicles)
  • 1 x Re-Tension U-Bolts Warning Decal
  • 1 x Tyre Loading Placard (Decal) with revised axle capacities
  • 2 x Lovells Rear Mudflaps
  • 1 x GVM Upgrade Owners Manual
  • 1 x Fitting Instruction Manual

Type Loading Index

When fitting a Lovells 3600kg GVM to the Isuzu D Max, the vehicle must have a minimum Tyre Load Index of 111 to remain compliant. Most D Max 4×4 variants come with a Tyre Load Index of 110 from factory, therefore an aftermarket tyre must be fitted when the vehicle’s GVM is increased to 3600kg.

Upon application, the Lovells GVM Upgrade can be DERATED to 3450kg should you wish to utilise the Original Equipment tyres. This has to be specified at point of order and noted on the Lovells GVM Upgrade ORDER FORM and approved by Lovells prior to order acceptance. If approved, a Lovells DERATED 3450kg compliance plate will be supplied with the GVM Upgrade kit along with a revised DERATED 3450kg tyre loading placard.

Who Can Fit LOVELLS GVM Upgrades Kits?

Because the Kit is approved on the basis of Lovells Springs being a Second Stage Manufacturer, and the responsibility ultimately lying with Lovells, only Lovells Springs Authorised Fitters (Production Facilities) are approved to fit this Kit. All GVM Upgrade Kit’s are supplied with detailed fitting instructions and appropriate documentation.


This kit will suit any vehicle owner/operator who has a need to carry greater loads. This includes Government Departments, Mining Companies, Farmers, Tradesmen, large and small businesses, even individuals loading their vehicles for travelling.

What Documents Are Required To Ensure You Are Complying With The Approval

There is a specific GVM Upgrade Kit Order Form (Federal Compliance Order Form and State Compliance Order Form) for each vehicle variant that must be filled out by the specified Lovells Authorised Fitter or End User per vehicle to be modified. On completion of the Kit being fitted by the Lovells Authorised Fitter, a Federal or State Compliance Check List must be filled out and retained by the Fitter and Lovells for future reference. Procedures such as these ensure requirements of Lovells being a second stage manufacturer are being fulfilled.

Is The Original Equipment Warranty Affected When Fitting A LOVELLS GVM Upgrade

Vehicle warranty is not affected when a GVM Upgrade is fitted. Our testing and analysis procedures are stringent and undertaken by an accredited Automotive Engineering Consultant to ensure original equipment components are not compromised. Modifications and load limits are within theoretical service/safety factors to ensure the integrity and longevity of Original Equipment parts associated with increasing the vehicles load carrying capabilities. As Lovells are a Second Stage Manufacturer, it is our responsibility to document these tests and thus take responsibility for the GVM upgrade compliance.

Therefore, should an original equipment component fail and be directly attributed/caused by the vehicle carrying loads to a maximum GVM of the revised figure or part failure associated with the GVM Upgrade modification, Lovells will cover warranty of the component after written proof and testing by an independent body has been lodged.