Homeโ€บ Belts and Cooling > Hoses and Pipesโ€บ Dorman 626-591 Engine Coolant Air Bleed Pipe
Part #: 626-591

Dorman 626-591 Engine Coolant Air Bleed Pipe

357 vehicles fit this part
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Fitment: Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, and Saab, 9-7x, Ascender, Avalanche, Canyon, Colorado, Envoy, Envoy XL, Envoy XUV, Escalade, Escalade ESV, Escalade EXT, Express 1500, Express 2500, Express 3500, H2, H3, H3T, Rainier, Savana 1500, Savana 2500, Savana 3500, Sierra, Sierra 1500, Sierra 2500 HD, Sierra 3500 HD, Silverado 1500, Silverado 2500 HD, Silverado 3500, Silverado 3500 HD, SSR, Suburban 1500, Suburban 2500, Suburban 3500 HD, Tahoe, Trailblazer, Trailblazer EXT, Yukon, Yukon XL 1500, and Yukon XL 2500
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Overview of Dorman Engine Coolant Air Bleed Pipe 626-591

The Dorman 626-591 Engine Coolant Air Bleed Pipe is designed to maintain proper coolant flow and air removal in your vehicle's cooling system. This component is compatible with a range of GM vehicles including Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, and Saab models such as the Escalade, Silverado 1500, and Yukon XL 1500.

  • Length: 11.0 inches for precise fitment
  • Inside Diameter: 0.16 inches ensuring optimal coolant flow
  • Outside Diameter: 0.2 inches for secure connections
  • Width: 43.7 mm and Height: 2.5 mm for accurate replacement
  • Includes 1 heater hose assembly for direct installation

Detailed Product Description

The Dorman 626-591 Engine Coolant Air Bleed Pipe is engineered to facilitate the removal of trapped air from the engine coolant system, preventing overheating and maintaining efficient engine temperature regulation. With an 11-inch length and precise inside and outside diameters, this pipe ensures a proper seal and fit within the cooling system. The dimensions of 43.7 mm width and 2.5 mm height contribute to its compatibility with specific GM vehicles, including the Chevrolet Avalanche, GMC Sierra 2500 HD, and Cadillac Escalade ESV. This part is essential for maintaining the integrity of the coolant circulation and preventing air pockets that can lead to engine performance issues.

Compatible Vehicles and Applications

This engine coolant air bleed pipe is compatible with a variety of GM makes and models, including:

  • Buick Rainier
  • Cadillac Escalade, Escalade ESV, Escalade EXT
  • Chevrolet Avalanche, Silverado 1500, Silverado 3500 HD, Suburban 1500
  • GMC Canyon, Sierra 1500, Sierra 3500 HD, Yukon XL 2500
  • Hummer H2, H3, H3T
  • Isuzu Ascender
  • Saab 9-7x

Common Issues Addressed by This Part

  • Air trapped in the engine coolant system causing overheating
  • Coolant leaks due to damaged or worn air bleed pipes
  • Reduced engine cooling efficiency from improper coolant flow
  • Engine temperature fluctuations linked to air pockets
  • Preventing corrosion and damage in the cooling system

Installation Notes and Tips

When installing the Dorman 626-591 Engine Coolant Air Bleed Pipe, ensure the cooling system is fully depressurized and cooled down to avoid injury. Verify the pipe dimensions match the original part for a secure fit. Properly route the hose assembly to prevent kinks or contact with hot engine components. After installation, bleed the cooling system to remove any trapped air and check for leaks to ensure optimal performance.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications, providing reliable performance and durability. The 626-591 Engine Coolant Air Bleed Pipe undergoes rigorous quality control to ensure fit and function. Please refer to Dorman's warranty policy for specific coverage details.

BrandDorman
Part Number626-591
Length11.0
Inside Diameter0.16
Width43.7
Outside Diameter0.2
Height2.5
Package Contents1 heater hose assembly

This part fits 357 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2020ChevroletExpress 25006.0LV8N/A
2020ChevroletExpress 35006.0LV8N/A
2020GMCSavana 25006.0LV8N/A
2020GMCSavana 35006.0LV8N/A
2019ChevroletExpress 25006.0LV8N/A
2019ChevroletExpress 35006.0LV8N/A
2019ChevroletSilverado 2500 HD6.0LV8N/A
2019ChevroletSilverado 3500 HD6.0LV8N/A
2019GMCSavana 25006.0LV8N/A
2019GMCSavana 35006.0LV8N/A
2019GMCSierra 2500 HD6.0LV8N/A
2019GMCSierra 3500 HD6.0LV8N/A
2018ChevroletExpress 25006.0LV8N/A
2018ChevroletExpress 35006.0LV8N/A
2018ChevroletSilverado 2500 HD6.0LV8N/A
2018ChevroletSilverado 35006.0LV8N/A
2018ChevroletSilverado 3500 HD6.0LV8N/A
2018GMCSavana 25006.0LV8N/A
2018GMCSavana 35006.0LV8N/A
2018GMCSierra 2500 HD6.0LV8N/A
2018GMCSierra 3500 HD6.0LV8N/A
2017ChevroletExpress 25006.0LV8N/A
2017ChevroletExpress 25004.8LV8N/A
2017ChevroletExpress 35006.0LV8N/A
2017ChevroletExpress 35004.8LV8N/A
2017ChevroletSilverado 2500 HD6.0LV8N/A
2017ChevroletSilverado 35006.0LV8N/A
2017ChevroletSilverado 3500 HD6.0LV8N/A
2017ChevroletSuburban 3500 HD6.0LV8N/A
2017GMCSavana 25006.0LV8N/A
2017GMCSavana 25004.8LV8N/A
2017GMCSavana 35006.0LV8N/A
2017GMCSavana 35004.8LV8N/A
2017GMCSierra 2500 HD6.0LV8N/A
2017GMCSierra 3500 HD6.0LV8N/A
2016ChevroletExpress 25006.0LV8N/A
2016ChevroletExpress 25004.8LV8N/A
2016ChevroletExpress 35006.0LV8N/A
2016ChevroletExpress 35004.8LV8N/A
2016ChevroletSilverado 2500 HD6.0LV8N/A
2016ChevroletSilverado 35006.0LV8N/A
2016ChevroletSilverado 3500 HD6.0LV8N/A
2016ChevroletSuburban 3500 HD6.0LV8N/A
2016GMCSavana 25006.0LV8N/A
2016GMCSavana 25004.8LV8N/A
2016GMCSavana 35006.0LV8N/A
2016GMCSavana 35004.8LV8N/A
2016GMCSierra 2500 HD6.0LV8N/A
2016GMCSierra 3500 HD6.0LV8N/A
2015ChevroletExpress 25006.0LV8N/A
2015ChevroletExpress 25004.8LV8N/A
2015ChevroletExpress 35006.0LV8N/A
2015ChevroletExpress 35004.8LV8N/A
2015ChevroletSilverado 2500 HD6.0LV8N/A
2015ChevroletSilverado 35006.0LV8N/A
2015ChevroletSilverado 3500 HD6.0LV8N/A
2015GMCSavana 25006.0LV8N/A
2015GMCSavana 25004.8LV8N/A
2015GMCSavana 35006.0LV8N/A
2015GMCSavana 35004.8LV8N/A
2015GMCSierra 2500 HD6.0LV8N/A
2015GMCSierra 3500 HD6.0LV8N/A
2014CadillacEscalade6.2LV8N/A
2014CadillacEscalade ESV6.2LV8N/A
2014ChevroletExpress 15005.3LV8N/A
2014ChevroletExpress 25006.0LV8N/A
2014ChevroletExpress 25004.8LV8N/A
2014ChevroletExpress 35006.0LV8N/A
2014ChevroletExpress 35004.8LV8N/A
2014ChevroletSilverado 2500 HD6.0LV8N/A
2014ChevroletSilverado 3500 HD6.0LV8N/A
2014ChevroletSuburban 15005.3LV8N/A
2014ChevroletTahoe5.3LV8N/A
2014GMCSavana 15005.3LV8N/A
2014GMCSavana 25006.0LV8N/A
2014GMCSavana 25004.8LV8N/A
2014GMCSavana 35006.0LV8N/A
2014GMCSavana 35004.8LV8N/A
2014GMCSierra 2500 HD6.0LV8N/A
2014GMCSierra 3500 HD6.0LV8N/A
2014GMCYukon6.2LV8N/A
2014GMCYukon5.3LV8N/A
2014GMCYukon XL 15006.2LV8N/A
2014GMCYukon XL 15005.3LV8N/A
2013CadillacEscalade6.2LV8N/A
2013CadillacEscalade6.0LV8N/A
2013CadillacEscalade ESV6.2LV8N/A
2013CadillacEscalade EXT6.2LV8N/A
2013ChevroletAvalanche5.3LV8N/A
2013ChevroletExpress 15005.3LV8N/A
2013ChevroletExpress 25006.0LV8N/A
2013ChevroletExpress 25004.8LV8N/A
2013ChevroletExpress 35006.0LV8N/A
2013ChevroletExpress 35004.8LV8N/A
2013ChevroletSilverado 15006.2LV8N/A
2013ChevroletSilverado 15004.8LV8N/A
2013ChevroletSilverado 15006.0LV8N/A
2013ChevroletSilverado 15005.3LV8N/A
2013ChevroletSilverado 2500 HD6.0LV8N/A
2013ChevroletSilverado 35006.0LV8N/A
2013ChevroletSilverado 3500 HD6.0LV8N/A
2013ChevroletSuburban 15005.3LV8N/A
2013ChevroletSuburban 25006.0LV8N/A
2013ChevroletTahoe6.0LV8N/A
2013ChevroletTahoe5.3LV8N/A
2013GMCSavana 15005.3LV8N/A
2013GMCSavana 25006.0LV8N/A
2013GMCSavana 25004.8LV8N/A
2013GMCSavana 35006.0LV8N/A
2013GMCSavana 35004.8LV8N/A
2013GMCSierra6.2LV8N/A
2013GMCSierra5.3LV8N/A
2013GMCSierra 15006.2LV8N/A
2013GMCSierra 15004.8LV8N/A
2013GMCSierra 15006.0LV8N/A
2013GMCSierra 15005.3LV8N/A
2013GMCSierra 2500 HD6.0LV8N/A
2013GMCSierra 3500 HD6.0LV8N/A
2013GMCYukon6.2LV8N/A
2013GMCYukon6.0LV8N/A
2013GMCYukon5.3LV8N/A
2013GMCYukon XL 15006.2LV8N/A
2013GMCYukon XL 15005.3LV8N/A
2013GMCYukon XL 25006.0LV8N/A
2012CadillacEscalade6.2LV8N/A
2012CadillacEscalade6.0LV8N/A
2012CadillacEscalade ESV6.2LV8N/A
2012CadillacEscalade EXT6.2LV8N/A
2012ChevroletAvalanche5.3LV8N/A
2012ChevroletColorado5.3LV8N/A
2012ChevroletExpress 15005.3LV8N/A
2012ChevroletExpress 25006.0LV8N/A
2012ChevroletExpress 25004.8LV8N/A
2012ChevroletExpress 35006.0LV8N/A
2012ChevroletExpress 35004.8LV8N/A
2012ChevroletSilverado 15006.2LV8N/A
2012ChevroletSilverado 15004.8LV8N/A
2012ChevroletSilverado 15006.0LV8N/A
2012ChevroletSilverado 15005.3LV8N/A
2012ChevroletSilverado 2500 HD6.0LV8N/A
2012ChevroletSilverado 3500 HD6.0LV8N/A
2012ChevroletSuburban 15005.3LV8N/A
2012ChevroletSuburban 25006.0LV8N/A
2012ChevroletTahoe6.0LV8N/A
2012ChevroletTahoe5.3LV8N/A
2012GMCCanyon5.3LV8N/A
2012GMCSavana 15005.3LV8N/A
2012GMCSavana 25006.0LV8N/A
2012GMCSavana 25004.8LV8N/A
2012GMCSavana 35006.0LV8N/A
2012GMCSavana 35004.8LV8N/A
2012GMCSierra6.2LV8N/A
2012GMCSierra5.3LV8N/A
2012GMCSierra 15006.2LV8N/A
2012GMCSierra 15004.8LV8N/A
2012GMCSierra 15006.0LV8N/A
2012GMCSierra 15005.3LV8N/A
2012GMCSierra 2500 HD6.0LV8N/A
2012GMCSierra 3500 HD6.0LV8N/A
2012GMCYukon6.2LV8N/A
2012GMCYukon6.0LV8N/A
2012GMCYukon5.3LV8N/A
2012GMCYukon XL 15006.2LV8N/A
2012GMCYukon XL 15005.3LV8N/A
2012GMCYukon XL 25006.0LV8N/A
2011CadillacEscalade6.2LV8N/A
2011CadillacEscalade6.0LV8N/A
2011CadillacEscalade ESV6.2LV8N/A
2011CadillacEscalade EXT6.2LV8N/A
2011ChevroletAvalanche5.3LV8N/A
2011ChevroletColorado5.3LV8N/A
2011ChevroletExpress 15005.3LV8N/A
2011ChevroletExpress 25006.0LV8N/A
2011ChevroletExpress 25004.8LV8N/A
2011ChevroletExpress 35006.0LV8N/A
2011ChevroletExpress 35004.8LV8N/A
2011ChevroletSilverado 15006.2LV8N/A
2011ChevroletSilverado 15004.8LV8N/A
2011ChevroletSilverado 15006.0LV8N/A
2011ChevroletSilverado 15005.3LV8N/A
2011ChevroletSilverado 2500 HD6.0LV8N/A
2011ChevroletSilverado 3500 HD6.0LV8N/A
2011ChevroletSuburban 15005.3LV8N/A
2011ChevroletSuburban 25006.0LV8N/A
2011ChevroletTahoe6.0LV8N/A
2011ChevroletTahoe5.3LV8N/A
2011GMCCanyon5.3LV8N/A
2011GMCSavana 15005.3LV8N/A
2011GMCSavana 25006.0LV8N/A
2011GMCSavana 25004.8LV8N/A
2011GMCSavana 35006.0LV8N/A
2011GMCSavana 35004.8LV8N/A
2011GMCSierra6.2LV8N/A
2011GMCSierra5.3LV8N/A
2011GMCSierra 15006.2LV8N/A
2011GMCSierra 15004.8LV8N/A
2011GMCSierra 15006.0LV8N/A
2011GMCSierra 15005.3LV8N/A
2011GMCSierra 2500 HD6.0LV8N/A
2011GMCSierra 3500 HD6.0LV8N/A
2011GMCYukon6.2LV8N/A
2011GMCYukon6.0LV8N/A
2011GMCYukon5.3LV8N/A
2011GMCYukon XL 15006.2LV8N/A
2011GMCYukon XL 15005.3LV8N/A
2011GMCYukon XL 25006.0LV8N/A
2010CadillacEscalade6.2LV8N/A
2010CadillacEscalade6.0LV8N/A
2010CadillacEscalade ESV6.2LV8N/A
2010CadillacEscalade EXT6.2LV8N/A
2010ChevroletAvalanche5.3LV8N/A
2010ChevroletColorado5.3LV8N/A
2010ChevroletExpress 15005.3LV8N/A
2010ChevroletExpress 25006.0LV8N/A
2010ChevroletExpress 25004.8LV8N/A
2010ChevroletExpress 35006.0LV8N/A
2010ChevroletExpress 35004.8LV8N/A
2010ChevroletSilverado 15006.2LV8N/A
2010ChevroletSilverado 15004.8LV8N/A
2010ChevroletSilverado 15006.0LV8N/A
2010ChevroletSilverado 15005.3LV8N/A
2010ChevroletSilverado 2500 HD6.0LV8N/A
2010ChevroletSilverado 35006.0LV8N/A
2010ChevroletSilverado 3500 HD6.0LV8N/A
2010ChevroletSuburban 15005.3LV8N/A
2010ChevroletSuburban 25006.0LV8N/A
2010ChevroletTahoe6.0LV8N/A
2010ChevroletTahoe5.3LV8N/A
2010GMCCanyon5.3LV8N/A
2010GMCSavana 15005.3LV8N/A
2010GMCSavana 25006.0LV8N/A
2010GMCSavana 25004.8LV8N/A
2010GMCSavana 35006.0LV8N/A
2010GMCSavana 35004.8LV8N/A
2010GMCSierra6.2LV8N/A
2010GMCSierra 15006.2LV8N/A
2010GMCSierra 15004.8LV8N/A
2010GMCSierra 15006.0LV8N/A
2010GMCSierra 15005.3LV8N/A
2010GMCSierra 2500 HD6.0LV8N/A
2010GMCSierra 3500 HD6.0LV8N/A
2010GMCYukon6.2LV8N/A
2010GMCYukon6.0LV8N/A
2010GMCYukon5.3LV8N/A
2010GMCYukon XL 15006.2LV8N/A
2010GMCYukon XL 15005.3LV8N/A
2010GMCYukon XL 25006.0LV8N/A
2010HummerH35.3LV8N/A
2010HummerH3T5.3LV8N/A
2009CadillacEscalade6.0LV8N/A
2009CadillacEscalade6.2LV8N/A
2009CadillacEscalade ESV6.2LV8N/A
2009CadillacEscalade EXT6.2LV8N/A
2009ChevroletAvalanche5.3LV8N/A
2009ChevroletAvalanche6.0LV8N/A
2009ChevroletColorado5.3LV8N/A
2009ChevroletExpress 15005.3LV8N/A
2009ChevroletSilverado 15006.0LV8N/A
2009ChevroletSilverado 15006.2LV8N/A
2009ChevroletSilverado 15005.3LV8N/A
2009ChevroletSilverado 35006.0LV8N/A
2009ChevroletSuburban 15005.3LV8N/A
2009ChevroletSuburban 15006.0LV8N/A
2009ChevroletTahoe6.0LV8N/A
2009ChevroletTahoe5.3LV8N/A
2009ChevroletTrailblazer6.0LV8N/A
2009ChevroletTrailblazer5.3LV8N/A
2009GMCCanyon5.3LV8N/A
2009GMCEnvoy5.3LV8N/A
2009GMCSavana 15005.3LV8N/A
2009GMCSierra6.2LV8N/A
2009GMCSierra 15006.0LV8N/A
2009GMCSierra 15006.2LV8N/A
2009GMCSierra 15005.3LV8N/A
2009GMCYukon6.0LV8N/A
2009GMCYukon6.2LV8N/A
2009GMCYukon5.3LV8N/A
2009GMCYukon XL 15006.2LV8N/A
2009GMCYukon XL 15005.3LV8N/A
2009GMCYukon XL 15006.0LV8N/A
2009HummerH26.2LV8N/A
2009HummerH35.3LV8N/A
2009HummerH3T5.3LV8N/A
2009Saab9-7x6.0LV8N/A
2009Saab9-7x5.3LV8N/A
2008CadillacEscalade6.2LV8N/A
2008CadillacEscalade ESV6.2LV8N/A
2008CadillacEscalade EXT6.2LV8N/A
2008ChevroletAvalanche5.3LV8N/A
2008ChevroletAvalanche6.0LV8N/A
2008ChevroletExpress 15005.3LV8N/A
2008ChevroletSilverado 15005.3LV8N/A
2008ChevroletSilverado 15006.0LV8N/A
2008ChevroletSilverado 35006.0LV8N/A
2008ChevroletSuburban 15005.3LV8N/A
2008ChevroletSuburban 15006.0LV8N/A
2008ChevroletTahoe6.0LV8N/A
2008ChevroletTahoe5.3LV8N/A
2008ChevroletTahoe6.2LV8N/A
2008ChevroletTrailblazer6.0LV8N/A
2008ChevroletTrailblazer5.3LV8N/A
2008GMCEnvoy5.3LV8N/A
2008GMCSavana 15005.3LV8N/A
2008GMCSierra6.2LV8N/A
2008GMCSierra 15005.3LV8N/A
2008GMCSierra 15006.2LV8N/A
2008GMCSierra 15006.0LV8N/A
2008GMCYukon6.0LV8N/A
2008GMCYukon5.3LV8N/A
2008GMCYukon6.2LV8N/A
2008GMCYukon XL 15005.3LV8N/A
2008GMCYukon XL 15006.2LV8N/A
2008GMCYukon XL 15006.0LV8N/A
2008HummerH26.2LV8N/A
2008HummerH35.3LV8N/A
2008Saab9-7x6.0LV8N/A
2008Saab9-7x5.3LV8N/A
2007BuickRainier5.3LV8N/A
2007CadillacEscalade6.2LV8N/A
2007CadillacEscalade ESV6.2LV8N/A
2007CadillacEscalade EXT6.2LV8N/A
2007ChevroletAvalanche5.3LV8N/A
2007ChevroletAvalanche6.0LV8N/A
2007ChevroletSilverado 15005.3LV8N/A
2007ChevroletSilverado 15006.0LV8N/A
2007ChevroletSuburban 15005.3LV8N/A
2007ChevroletSuburban 15006.0LV8N/A
2007ChevroletTahoe5.3LV8N/A
2007ChevroletTrailblazer6.0LV8N/A
2007ChevroletTrailblazer5.3LV8N/A
2007GMCEnvoy5.3LV8N/A
2007GMCSierra 15005.3LV8N/A
2007GMCSierra 15006.2LV8N/A
2007GMCSierra 15006.0LV8N/A
2007GMCYukon5.3LV8N/A
2007GMCYukon6.2LV8N/A
2007GMCYukon XL 15005.3LV8N/A
2007GMCYukon XL 15006.2LV8N/A
2007GMCYukon XL 15006.0LV8N/A
2007Saab9-7x5.3LV8N/A
2006BuickRainier5.3LV8N/A
2006ChevroletSSR6.0LV8N/A
2006ChevroletTrailblazer6.0LV8N/A
2006ChevroletTrailblazer5.3LV8N/A
2006ChevroletTrailblazer EXT5.3LV8N/A
2006GMCEnvoy5.3LV8N/A
2006GMCEnvoy XL5.3LV8N/A
2006IsuzuAscender5.3LV8N/A
2006Saab9-7x5.3LV8N/A
2005BuickRainier5.3LV8N/A
2005ChevroletSSR6.0LV8N/A
2005ChevroletTrailblazer EXT5.3LV8N/A
2005GMCEnvoy5.3LV8N/A
2005GMCEnvoy XL5.3LV8N/A
2005GMCEnvoy XUV5.3LV8N/A
2005IsuzuAscender5.3LV8N/A
2005Saab9-7x5.3LV8N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

12570675

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.