Parts for your 2007 Holden Commodore-Oil pump

2007 Holden Commodore Oil Pump — What It Does and When to Sort It

Technical sources, including the Holden VE Commodore Service Manual (2006–2013) and GM Service Information for the LY7 V6 and L98 V8, confirm that every 2007 Holden Commodore runs an engine oil pump. The 3.6‑litre Alloytec V6 (LY7) uses a crankshaft‑driven gerotor pump integrated into the front cover, while the 6.0‑litre Gen IV V8 (L98) uses a crankshaft‑mounted gerotor pump located behind the timing cover. In short, the oil pump is absolutely relevant on this model.

On a 2007 Commodore, the oil pump’s job is straightforward but critical: it pulls oil from the sump, pressurises it, and feeds bearings, camshafts, timing components, and lifters. Proper oil pressure prevents metal‑to‑metal contact, manages heat, and keeps the engine tidy by carrying contaminants to the filter. If pressure drops, warning lights, top‑end tick, timing chain noise (notably on Alloytec), and accelerated wear can follow.

Routine servicing keeps the pump happy. Regular oil and filter changes using the viscosity and spec recommended in the owner’s manual (commonly 5W‑30 in many Australian and New Zealand conditions) help maintain pressure and reduce sludge. A quick mechanical oil‑pressure check during a major service is a smart add‑on if the dash light has flickered or the kilometres are high.

• When replacement is considered: persistent low oil pressure (verified with a gauge), a noisy top end that improves with revs, metal in the oil, or as part of a rebuild.
• What owners notice: red oil can warning, tapping lifters, timing rattle on cold start, or DTCs like P0521/P0523 for oil pressure range issues.

Replacement is specialist work. On the LY7 V6, the pump is part of the front cover, so access involves removing the accessory drive, crank pulley, and timing cover, timing alignment, new gaskets and front crank seal, and careful cleaning of the pickup screen are essential. On the L98 V8, the pump sits on the crank snout behind the cover, it typically requires loosening the sump to reseal or to refit the pickup tube O‑ring. In both cases, the pump should be pre‑lubed, the pickup O‑ring renewed, and fasteners torqued to spec. Re‑check oil pressure on first start and scan for faults.

Best practice is quality oil, a good filter, and early diagnosis of any pressure concerns. Genuine or reputable aftermarket gerotor pumps that meet GM specs are recommended to keep the VE’s engines healthy for the long haul.

Technical basis: Holden VE Commodore Service Manual (2006–2013), GM Service Information for LY7 (HFV6) and L98 (Gen IV) oiling systems, AC Delco/GM technical literature on gerotor oil pumps.

• Do all 2007 Holden Commodores have an oil pump?
  Yes. Both the 3.6‑litre Alloytec V6 (LY7) and the 6.0‑litre V8 (L98) use a crankshaft‑driven gerotor oil pump. It’s fundamental to engine lubrication and is confirmed in Holden and GM service documentation for the VE platform.
• When should the oil pump be replaced?
  There’s no fixed kilometre interval. Replacement is considered when verified low oil pressure exists, after a major engine repair or rebuild, if sludge or metal contamination is found, or when symptoms like lifter tick and warning lights persist despite correct oil and a new filter.
• What are the signs of a failing oil pump on a VE?
  Common clues include the red oil pressure light, tapping or rattling that improves with revs, timing chain noise on the Alloytec V6, low hot‑idle pressure on a mechanical gauge, or pressure‑related fault codes. Any of these warrant immediate inspection before further driving.