Parts for your 2009 Holden Commodore-Drive belt

2009 Holden Commodore drive belt — what it does and when to replace it

Based on the Holden VE Commodore Service Manual (Engine Mechanical — V6 LY7/3.6 and V8 L76/L98 sections), Gregory’s Service and Repair Manual for Commodore VE (2006–2011), and local parts catalogues from Gates and Dayco that list specific serpentine belts for 2009 VE variants, the 2009 Holden Commodore is fitted with an accessory drive belt (serpentine belt). It is absolutely relevant to servicing this model across both V6 and V8 engines.

The drive belt’s job is straightforward but critical. Wrapped around a set of pulleys and kept tight by an automatic tensioner, it spins the alternator to keep the battery charged, runs the air‑con compressor for cool air, and powers the hydraulic power steering pump on VE models. On the Alloytec V6, it also drives the water pump, so a failed belt can quickly lead to overheating. The V8’s front-end accessory drive is similar, with the belt driving the alternator, A/C, and water pump.

For servicing, regular inspection is the go. Modern EPDM belts don’t always crack like the old neoprene types, they tend to wear the ribs down. A sensible rule for Aussie and Kiwi conditions is to inspect every 15,000–20,000 km and plan replacement around 90,000–120,000 km, or sooner if there’s any squeal, glazing, frayed edges, rib chunking, battery warning lights, intermittent power steering assistance, or rising temps on V6s. Any rumbling or flutter from the tensioner or idler pulleys is a sign to change those with the belt.

• Check belt rib wear with a gauge if available, otherwise look for shiny ribs and rubber dust.
• Spin and feel the idlers/tensioner for roughness, replace if noisy or loose.
• Confirm pulley alignment, misalignment chews belts fast.
• Keep the belt free of oil and coolant, contamination shortens life.
• Follow the under‑bonnet routing diagram or workshop manual when refitting.

Because the VE range spans multiple engines and running changes (including SIDI V6 introductions), belt length and routing can vary. Matching parts by VIN and engine code avoids hassles. When fitted correctly and paired with healthy pulleys, a quality belt runs quietly for years, protecting the Commodore from no‑charge, no‑steer, or overheat dramas.

Popular questions

How often should the drive belt be replaced on a 2009 Commodore?
There’s no hard expiry date, but many workshops recommend inspection every service and replacement between 90,000 and 120,000 km, or at the first sign of wear. High heat, stop‑start city driving, and accessory load can bring that forward.

What symptoms point to a failing belt or tensioner?
Chirping or squealing on start‑up, glazing or rib wear, intermittent battery warning light, heavy steering on VE models, rising coolant temps on V6s, or visible belt fray. A flickering belt, belt “walk”, or rattly idler/tensioner noise also signals trouble.

Can the car be driven if the belt snaps?
Not safely. A snapped belt will stop the alternator (risking a flat battery), disable power steering assist, and on V6s it can halt the water pump, causing rapid overheating. It should be towed and repaired rather than driven.