Parts for your 2009 Holden Commodore-Cluth slave cylinder

2009 Holden Commodore cluth-slave-cylinder

Technical references confirm a clutch slave cylinder is used on 2009 Holden Commodore manual models. The Holden VE Series Service Manual (Clutch Controls and Manual Transmission sections) specifies a hydraulic clutch with an internal concentric slave cylinder and release bearing assembly inside the bellhousing. This setup is documented for both the V6 Aisin AY6 and the V8 Tremec TR6060 gearboxes. Tremec TR6060 service literature and Aisin AY6 documentation likewise describe an internal concentric slave cylinder. Genuine GM/Holden and AC Delco parts catalogues list a concentric clutch slave cylinder for VE Commodore (circa 2006–2013). Therefore, a clutch slave cylinder is relevant and fitted to 2009 manual variants, it is not used on automatic models.

On a 2009 Holden Commodore, the clutch slave cylinder (often called a concentric slave cylinder or CSC) sits inside the bellhousing and wraps around the gearbox input shaft. Its job is to turn pedal effort into smooth hydraulic movement that pushes the clutch diaphragm spring, letting gears be selected without graunching. Because it’s an internal unit combined with the release bearing, it’s out of sight and largely maintenance-free, but it relies on clean, fresh fluid to stay happy.

As part of regular servicing, the brake/clutch hydraulic fluid should be replaced about every two years, or sooner if it looks dark or contaminated. Use quality DOT 4 fluid from a sealed container and avoid letting the reservoir run low. A soft pedal, difficulty engaging gears, a clutch that won’t fully disengage, or fluid weeping from the bellhousing are all signs the cluth-slave-cylinder may be on the way out.

Replacement is more involved because the gearbox has to come out. That’s why most workshops recommend fitting a full clutch kit and the concentric slave cylinder at the same time—saving a second round of labour later. It’s smart to check the rear main seal, spigot/pilot bearing, flywheel condition, and clutch fork pivot (where applicable) while you’re in there. Pre-fill and correctly bleed the system after refit, pressure or vacuum bleeding helps move stubborn air from the internal lines.

• Typical symptoms: spongy or low pedal, creeping at the lights, hard shifts into first/reverse, bellhousing fluid drips.
• Service tips: flush fluid biennially, keep the reservoir clean, and replace the CSC whenever the clutch is renewed.

This approach keeps the 2009 Holden Commodore’s cluth-slave-cylinder reliable and the manual shift feel crisp, whether it’s an Aisin AY6 V6 or a TR6060 V8.

Popular questions about the 2009 Holden Commodore cluth-slave-cylinder

Does my 2009 Commodore actually have a clutch slave cylinder?
Yes—if it’s a manual. The VE manual uses an internal concentric slave cylinder combined with the release bearing. Automatic models don’t have a clutch system, so there’s no slave cylinder fitted.

How often should the clutch fluid be changed?
Every two years is a good rule of thumb, or sooner if the fluid looks dark. Fresh DOT 4 fluid helps protect the internal seals in the CSC and keeps pedal feel consistent in Aussie and Kiwi conditions.

Should the slave cylinder be replaced when doing a clutch?
Highly recommended. Because the gearbox has to come out to access the CSC, most owners replace it with the clutch kit to avoid paying for the same labour twice and to reduce the chance of leaks later on.