Description
Factory Holden Commodore Workshop Manual (2018–2020)
This OEM-level repair manual covers every ZB-generation Holden Commodore built from 2018 through 2020, giving US-market technicians and enthusiastic owners the factory procedures needed to service these Opel-platform sedans and Sportwagons with confidence.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | 2.0L LTG turbocharged inline-4; 3.6L LGX naturally aspirated V6 |
| Hybrid | 54 kW GM Voltec electric motor; FHEV drivetrain; lithium-ion battery pack |
| Transmissions | 8-speed automatic Aisin AF50-8; 9-speed automatic 9T50 / 9T60 |
| Drive | FWD; AWD (V6 variants) |
| Model Years | 2018, 2019, 2020 |
| Badge Twins | Opel Insignia B; Vauxhall Insignia B; Buick Regal (North America) |
Common Commodore Repairs Covered
| System | Procedures |
|---|---|
| 9-Speed Automatic Transmission | 9T50/9T60 shift-quality diagnosis, TCM relearn, fluid and filter service |
| LTG Turbo Engine | Turbocharger oil feed line inspection, carbon cleaning on direct-injection intake valves, cam phaser service |
| Hybrid Battery & Charging | Voltec battery module removal, high-voltage isolation procedures, regenerative braking calibration |
| Suspension & Steering | Front strut replacement, rear knuckle/hub bearing R&R, electric power steering torque sensor calibration |
Format & Delivery
PDF. Instant download; lifetime re-downloads.
Frequently Asked Questions
Which ZB Commodore trim levels does this manual cover?
All ZB-series variants are covered, including the Commodore LT, RS, RS-V, Calais, Calais-V, and the top-spec VXR performance model. Both the liftback sedan and Sportwagon body styles built between 2018 and 2020 are fully addressed.
Is the ZB Commodore related to any North American vehicles?
Yes. The ZB Commodore shares its Epsilon II-derived platform with the Buick Regal sold in North America, as well as the Opel and Vauxhall Insignia B marketed in Europe. Technicians familiar with those vehicles will recognize many of the shared components and procedures documented here.
Does the manual cover the hybrid battery and electric motor systems?
Yes. The eAssist FHEV section details the 54 kW GM Voltec motor, lithium-ion battery pack, high-voltage safety isolation steps, battery module replacement, and regenerative braking system calibration — information critical for safe hybrid servicing.
What format is the manual?
The manual is a PDF file delivered by instant download. It is fully searchable, zoomable, and compatible with any PDF reader on Windows, Mac, iOS, or Android devices. Individual pages or entire chapters can be printed as needed.
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