GM LS/Vortec Oil Pump & Timing Chain Kit, 3-Bolt Cam Gear Configuration

This Timing Chain Kit is intended for owners and engine technicians repairing the listed engine timing system on 2004-2005 Buick Rainier. The vehicle must also use 4.8L / 5.3L / 5.7L / 6.0L GM LS/Vortec V8 engine, front engine, internal engine position, and Engine lubrication & timing configuration.

Use this Timing Chain Kit when chain, guide, tensioner, sprocket, phaser, or timing-cover wear has been identified during diagnosis. Diagnosis should identify the affected component, and the repair must match 4.8L / 5.3L / 5.7L / 6.0L GM LS/Vortec V8 engine, front engine, internal engine position, and Engine lubrication & timing configuration. Also verify Engine code: LH6 / LM4 / LM7 / LR4 and Cam gear: 3-bolt sensor-hub or 3-bolt non-sensor-hub configuration.

Relevant signs include startup rattle, timing noise, cam-to-crank correlation faults, or excessive timing-component wear. These symptoms can have more than one cause, so the vehicle should be inspected before treating the component as the source of the problem.

This Timing Chain Kit renews the matched timing-drive components that keep crankshaft and camshaft operation synchronized. Its configuration is specific to front engine, internal engine position and Engine lubrication & timing requirements.

The package includes 1 x engine oil pump, 2 x washers, and 1 x timing chain kit. Keeping the confirmed components together supports the repair sequence described for 2004-2005 Buick Rainier.