Parts for your 2009 Holden Commodore-Oil pump

2009 Holden Commodore oil-pump — what it does and when to replace it

Based on the Holden VE Commodore Workshop/Service Manual (2006–2013) and GM Service Information for the Alloytec V6 (LY7/LE0 and related variants) and Gen IV V8 (L98/L76), every 2009 Holden Commodore fitted with these petrol engines uses a crankshaft-driven gerotor oil pump. The pump is therefore absolutely relevant to this model: on the V6 it’s integrated with the front cover, and on the V8 it’s a front-mounted pump driven by the crank snout.

The oil pump’s job is simple but critical: it circulates engine oil under pressure to bearings, camshafts, timing components and hydraulic lifters, keeping friction down and heat under control. In a 2009 Commodore, good oil pressure is the difference between a smooth, quiet cruiser and a noisy, prematurely worn engine. With the pump taking its drive straight off the crank, delivery is consistent across the rev range when the system is healthy.

Servicing doesn’t usually include replacing the pump as a routine item, instead, it’s about protecting it. Fresh, correctly graded oil and a quality filter at the recommended intervals (shorter intervals if the car does lots of short trips, towing or high-heat work) reduce sludge and varnish that can starve the pickup and wear the pump’s internals. Sticking to the specified viscosity for the engine variant helps the pressure relief system work as designed.

• Watch for warning signs: low oil-pressure light, rattly top-end on cold start, lifter tick, timing-chain chatter (V6), or an illuminated check engine lamp with pressure-related faults.
• If low pressure is suspected, a workshop should confirm with a mechanical gauge test, check the oil pickup and O-rings, and inspect for leaks at the front cover/harmonic balancer area.

Replacement is a once-in-a-blue-moon job, typically only after verified low pressure, internal wear, or contamination from a major engine event. On these engines, the work generally involves removing the harmonic balancer and front cover, cleaning gasket surfaces, fitting a new front crank seal, and carefully priming the pump before first start. It’s also smart practice to renew the pickup O-ring (particularly on the V8) and use fresh engine oil and filter on reassembly. Following the Holden/GM torque specs and sealant locations from the official workshop manual is essential to avoid pressure leaks or repeat issues.

Looked after with the right oil and intervals, the 2009 Commodore’s oil pump is a quiet achiever that keeps the whole show running sweet as.

Does the 2009 Holden Commodore have an oil pump?

Yes. The VE-series 2009 Commodore petrol engines (Alloytec V6 and Gen IV 6.0‑litre V8) use a crank-driven gerotor oil pump. This is documented in the Holden VE Workshop Manual and GM Service Information for those engines.

When should the oil pump be replaced on a 2009 Commodore?

It’s not a routine service item. Replacement is considered after proper diagnosis confirms low oil pressure from internal pump wear, pickup seal issues, or contamination. A mechanical pressure test and inspection are recommended before committing to replacement.

What maintenance helps the oil pump last?

Regular oil and filter changes using the specified viscosity, fixing leaks promptly, and avoiding sludge build-up. If any oil-pressure warning or top-end noise appears, have it checked early to prevent collateral damage.