The timing chain is located in the front of the motor and is attached to a set of gears and pulleys that power multiple mechanical components, including the crankshaft and camshaft. In order for your engine to fire, the timing chain must smoothly rotate around the gears without hesitation. Although the timing chain is made out of metal, it is subject to wear and tear and may break if not replaced as recommended by the factory. Oil pump kit for Chevy Avalanche, Camaro, Colorado, Corvette, Silverado 2500 3500 HD SS, Express 1500 2500 3500 4500, Tahoe, Trailblazer, Suburban 2500 3500 HD, for Pontiac G8.Timing chain kit for GMC Savana 2500 3500 4500, Sierra 1500 HD, Sierra 2500 3500, Yukon, Yukon XL 1500 2500, for Hum mer H2 H3 H3T, for Buick Rainier, for Cadillac CTS Replace Part Number:12646386-Timing Chain,12591689-Timing Gears,12556582-Crankshaft Sprocket,12626407-Timing Chain Tensioners,M295HV-Oil Pump,TCS45993 -Timing Cover Gaskets kit Oil pump and timing chain kit including: 1 timing chain (60 link roller chain), 1 cam sprocket (44 teeth),1 crank sprocket (22 teeth), 1 timing cover gasket set, 1 oil pump Each pump features an advanced diecast aluminum housing and premium internal components with carbon ceramic seals for superior durability.The work involved in replacing one of these components is about the same as replacing all of them - save yourself time and money in the long run by replacing all components at the same time Warranty: PANNUOSCS's Timing Chain Kit can be returned or exchanged within 12 months. If you have any questions, just email us and we will provide a professional, friendly, and supportive reply within 24 hours.

Fits Following Models:

2007 Buick Rainier 5.3L V8 OHV (16 VALVE) VORTEC

2008-2009 Buick Lacrosse 5.3L V8 OHV (16 VALVE) VORTEC

2009-2011 Cadillac CTS 6.2L V8 OHV (16 VALVE) VORTEC

2009 Chevy Colorado 5.3L V8 OHV (16 VALVE) VORTEC

2007-2009 Chevy Avalanche 5.3L V8 OHV (16 VALVE) VORTEC

2010-2013 Chevy Camaro 6.2L V8 OHV (16 VALVE) VORTEC

2007 Chevy Corvette 6.0L V8 OHV (16 VALVE) VORTEC

2008-2013 Chevy Corvette 6.2L V8 OHV (16 VALVE) VORTEC

2008-2009 Chevy Express 2500 6.0L V8 OHV (16 VALVE) VORTEC

2008-2009 Chevy Express 2500 4.8L V8 OHV (16 VALVE) VORTEC

2008-2009 Chevy Impala 5.3L V8 OHV (16 VALVE) VORTEC

2007-2008 Chevy Trailblazer 5.3L V8 OHV (16 VALVE) VORTEC

2008-2009 Chevy Trailblazer 6.0L V8 OHV (16 VALVE) VORTEC

2007-2008 Chevy Silverado 1500 5.3L V8 OHV (16 VALVE) VORTEC

2007 Chevy Silverado 1500 6.0L V8 OHV (16 VALVE) VORTEC

2007-2009 Chevy Silverado 1500 4.8L V8 OHV (16 VALVE) VORTEC

2007-2009 Chevy Suburban 1500 5.3L V8 OHV (16 VALVE) VORTEC

2007-2009 Chevy Tahoe 5.3L V8 OHV (16 VALVE) VORTEC

2007-2009 Chevy Tahoe 4.8L V8 OHV (16 VALVE) VORTEC

2009 GMC Canyon 5.3L V8 OHV (16 VALVE) VORTEC

2007-2009 GMC Envoy 5.3L V8 OHV (16 VALVE) VORTEC

2007-2008 GMC Sierra 1500 5.3L V8 OHV (16 VALVE) VORTEC

2007-2009 GMC Sierra 1500 6.0L V8 OHV (16 VALVE) VORTEC

2007-2009 GMC Sierra 1500 4.8L V8 OHV (16 VALVE) VORTEC

2007-2009 GMC Sierra 2500 HD 6.0L V8 OHV (16 VALVE) VORTEC

2007-2009 GMC Yukon 5.3L V8 OHV (16 VALVE) VORTEC

2007-2009 GMC Yukon 4.8L V8 OHV (16 VALVE) VORTEC

2007-2009 GMC Sierra 3500 HD 6.0L V8 OHV (16 VALVE) VORTEC

2008 Pon tiac Grand Prix 5.3L V8 OHV (16 VALVE) VORTEC

2008-2009 Pon tiac G8 6.0L V8 OHV (16 VALVE) VORTEC

2009 Pon tiac G8 6.2L V8 OHV (16 VALVE) VORTEC