Parts for your 2019 Holden Commodore-Cluth slave cylinder

2019 Holden Commodore cluth-slave-cylinder — is it used?

Short answer: a cluth-slave-cylinder isn’t used on the 2019 Holden Commodore (ZB). That model line sold in Australia and New Zealand was automatic-only, so there’s no clutch hydraulic system to begin with. This isn’t just hearsay—Holden/GM Service Information (ZB Commodore SI), the 2019 ZB Commodore Owner’s Manual, and Holden’s model-year technical specifications all detail the transmissions offered locally and none include a manual option.

Because there’s no manual gearbox in the AU/NZ 2019 range, there’s no clutch pedal, master cylinder, or cluth-slave-cylinder. A cluth-slave-cylinder is only relevant on a manual transmission, where it converts pedal pressure into movement at the clutch release mechanism. With the ZB Commodore’s autos, gear changes are handled by the transmission’s own hydraulics and electronics—completely separate from any clutch hydraulics you’d see in a manual.

What the 2019 ZB Commodore actually runs:

• 2.0L turbo petrol front-wheel drive: 8-speed automatic
• 3.6L V6 AWD: 9-speed automatic

Those line-ups are confirmed across Holden’s published specs and workshop information for the local market. While the Opel Insignia B (the ZB’s European twin) did offer manuals in some regions, Holden didn’t bring those to Australia or New Zealand for MY19.

If someone’s chasing a cluth-slave-cylinder for a 2019 Holden Commodore, it’s usually because they’re thinking of earlier Commodores that could be had with a manual, or they’ve read about overseas Insignia variants. For any fluid leak seen around the bellhousing area on a 2019 ZB, it won’t be clutch fluid—more likely transmission fluid or engine oil, so the diagnosis and parts pathway are totally different.

Technical references used: Holden/GM Service Information (ZB Commodore), Holden ZB Commodore Owner’s Manual (MY19), and Holden media technical specifications for the ZB range confirming automatic-only availability in Australia and New Zealand.

• Popular questions about the 2019 Holden Commodore cluth-slave-cylinder

Does a 2019 Holden Commodore have a cluth-slave-cylinder?
No. The 2019 ZB Commodore sold in Australia and New Zealand is automatic-only, so it doesn’t use a manual clutch system or a cluth-slave-cylinder. Holden’s MY19 specs and service information list only 8-speed and 9-speed automatics.

What transmissions were fitted to the 2019 Holden Commodore locally?
The 2.0L turbo petrol models run an 8-speed automatic, and the V6 AWD models run a 9-speed automatic. There was no factory manual transmission option in the AU/NZ 2019 range.

There’s fluid near the bellhousing—could it be from a cluth-slave-cylinder?
Not on a 2019 ZB Commodore. With no clutch hydraulics fitted, leaks in that area are more likely transmission fluid (e.g., front pump/shaft seal) or engine oil (e.g., rear main seal). A technician can confirm the source before any parts are ordered.