This workshop manual covers the Holden Commodore, specifically the VZ-VE generations built on the GM Zeta platform. Renowned for its robust engineering and Australian heritage, the Commodore offered a blend of performance and practicality, making it a popular choice for a wide range of drivers. This manual focuses on detailed engine rebuild procedures for the Alloytec V6 engine, known for its aluminum construction, DOHC 24-valve configuration, and multi-point fuel injection system, providing approximately 190-200 kW of power and 330-340 Nm of torque. This comprehensive workshop manual is designed to assist owners, technicians, and mechanics in maintaining and repairing their Holden Commodore. It provides detailed guidance on engine rebuilds, covering disassembly, inspection, and reassembly with precise torque specifications. Additionally, the manual offers component-level diagnostic coverage and troubleshooting information for the engine and its associated systems, including maintenance recommendations such as the use of SAE 5W-30 oil and an oil capacity of approximately 5.5 liters.