Parts for your 2008 Holden Colorado-Thrust bearing

2008 Holden Colorado thrust bearing — what it is, whether you’ve got one, and how to look after it

Based on technical references for the RC-series platform — including the Holden RC Colorado Workshop Manual (2008, Clutch section), the Isuzu D‑Max/4JJ1 Service Manual, and Exedy Australia’s clutch catalogue/tech notes — a thrust bearing is fitted to manual-transmission 2008 Holden Colorado models as part of the clutch release system. Automatic models don’t use a clutch thrust bearing. On some manual variants it’s integrated with a concentric slave cylinder (CSC), on others it works with a release fork and external slave.

In a manual Colorado, the thrust (release) bearing transfers pedal effort to the clutch pressure plate while allowing everything to spin smoothly. Press the pedal, the bearing pushes on the diaphragm fingers, the clutch disengages, and gears slot in without a drama. It’s a small part with a big job, and when it’s tired, it usually tells you.

Typical signs the thrust bearing is on the way out include a rumble, growl, or chirp when the clutch pedal is pressed, a rough or notchy pedal feel, or, on CSC-equipped units, fluid weeping inside the bellhousing. If the noise stops when you release the pedal, that’s a classic thrust-bearing clue.

Servicing wise, there’s no set interval just for the bearing — it’s best practice to replace it whenever the clutch is out. Most workshops fit a complete clutch kit: pressure plate, friction disc, thrust bearing (or CSC), and pilot bearing/bush. It’s cheap insurance, given the labour to pull the gearbox. While you’re there, check the input shaft seal, guide tube, fork pivot and clip (where applicable), rear main seal, and flywheel condition. Lightly lube the input shaft splines with the correct high-temp clutch spline grease, but don’t overdo it. If your Colorado runs a CSC, replace the whole unit and bleed the hydraulics with the brake fluid spec shown on the reservoir cap or as per the workshop manual.

Towing, heavy loads, off-road work, and lots of stop-start driving will age a clutch system faster, so expect earlier attention under those conditions. For part correctness, match by VIN and gearbox code — the RC Colorado shares much hardware with the Isuzu D‑Max, but there are variations across engines and build dates.

Technical sources referenced:

• Holden RC Colorado Workshop Manual (2008), Clutch/Transmission sections (GM Global TIS)
• Isuzu D‑Max/4JJ1 Engine and Transmission Service Manuals
• Exedy Australia clutch catalogue and technical bulletins for RC Colorado/D‑Max

Popular questions

Does every 2008 Holden Colorado have a thrust bearing?

Manual models do — it’s the clutch release (thrust) bearing, sometimes built into a concentric slave cylinder. Automatic models don’t use a clutch thrust bearing. Separately, the engine itself has crankshaft thrust bearings inside the block, but those aren’t routine service items unless the engine is being rebuilt.

When should the thrust bearing be replaced on a 2008 Colorado?

Replace it whenever the clutch is out, or at the first sign of noise when the pedal is pressed. If your ute has a CSC, replace the whole CSC assembly. It’s smart to fit a full clutch kit and have the flywheel inspected and, if needed, machined at the same time.

What noises point to a failing thrust bearing?

A chirp, squeal, or growl that appears with the clutch pedal pressed and disappears when released is the classic giveaway. A gritty pedal feel or hydraulic fluid inside the bellhousing (CSC types) can also point to a worn bearing.