[REPLACEMENT OVER BLOW CAP] The radiator cap holds the coolant inside the radiator, but it also works as a two-way valve that keeps the right pressure inside so the radiator does it work correctly. Symptoms of a Bad Radiator Cap: air enters the system, low coolant level, coolant leaks, overflowing reservoir, overheating engine.[REPLACES PART] Coolant cap 15066786;15075118;22652695;22671020;RC98[FRIENDLY NOTE] It is extremely important to always make sure to allow the engine to cool down becompatible withe removing the radiator cap, as removing the cap from a hot system can cause sudden coolant spray and severe burns. This is NOT a real part, it's a aftermarket replacement part manufactured by Engine DancerCondition: NewCompatible with the Following Vehicles:compatible with Cadillac: Escalade 2002-2006, Escalade ESV 2003-2006, Escalade EXT 2002-2006, SRX 2004-2009compatible with Chevy: Avalanche 1500 / 2500 2002-2006, Captiva Sport 2012-2015, Cavalier 1999-2005, Classic 2004-2005, Cobalt 2005-2010, Equinox 2005-2017, Express 2500 2006-2006, Malibu 1999-2012, SSR 2003-2006, Silverado 1500 1999-2006, Silverado 1500 HD 2001-2003 2005-2006, Silverado 2500 1999-2004, Silverado 2500 HD 2001-2006, Silverado 3500 2001-2006, Suburban 1500 / 2500 2000-2006, Tahoe 2000-2006, Traverse 2013-2017compatible with GMC: Acadia 2013-2016, Acadia Limited 2017-2017, Savana 2500 2006-2006, Sierra 1500 1999-2006, Sierra 1500 HD 2001-2003 2005-2006, Sierra 2500 1999-2004, Sierra 2500 HD / Sierra 3500 2001-2006, Terrain 2010-2017, Yukon / XL 1500 / XL 2500 2000-2006compatible with Pontiac: G5 2007-2009, G6 2005-2010, Grand Am 1999-2005, Sunfire 1999-2005, Solstice 2006-2009, Torrent 2006-2009compatible with Saturn: Aura 2007-2009, Ion 2003-2007, Sky 2007-2010, Vue 2002-2010compatible with Oldsmobile: Alero 1999-2004, Cutlass 1999-1999, Intrigue 2000-2002compatible with Hummer: H2 2003-2009compatible with Suzuki: XL-7 2007-2009compatible with Buick: Enclave 2013-2017colour: blackMaterial: plasticPackage Contents:1 x Radiator CapOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.