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Dayco 89397 Accessory Drive Belt Tensioner AssemblyOE Quality 60-Day Returns
Dayco 89397 Accessory Drive Belt Tensioner Assembly - view 1
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Dayco 89397 Accessory Drive Belt Tensioner Assembly - view 4
Part #: 89397

Dayco 89397 Accessory Drive Belt Tensioner Assembly

Fan and Alternator, Alternator and Power Steering, Main Drive, and Grooved Pulley
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🚗Fitment: Cadillac, Chevrolet, GMC, Hummer, and Saab, 9-7x, Avalanche, Canyon, Colorado, Envoy, Escalade, Escalade ESV, Escalade EXT, Express 1500, Express 2500, Express 3500, H2, H3, H3T, Savana 1500, Savana 2500, Savana 3500, Sierra 1500, Sierra 2500 HD, Sierra 3500 HD, Silverado 1500, Silverado 2500 HD, Silverado 3500 HD, Suburban 1500, Suburban 2500, Suburban 3500 HD, Tahoe, Trailblazer, Yukon, Yukon XL 1500, and Yukon XL 2500
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Reliable Accessory Drive Belt Tensioner for GM and Saab Vehicles

The Dayco 89397 accessory drive belt tensioner assembly is designed to maintain optimal tension on serpentine belts in a range of GM and Saab models. Engineered for automatic operation and counterclockwise direction, this tensioner supports efficient belt performance and longevity.

  • Automatic tensioner type for consistent belt tension
  • Compatible with serpentine belt systems
  • Counterclockwise rotation direction
  • Single pulley design with 76 mm diameter
  • Pulley features 6 grooves and 28.7 mm width

Technical Details and Specifications

The Dayco 89397 tensioner assembly features a single pulley with a diameter of 76 mm, designed without a flat surface and equipped with six grooves to accommodate serpentine belts. The pulley width measures 28.7 mm, ensuring proper belt alignment and grip. This automatic tensioner operates in a counterclockwise direction, providing consistent tension to the accessory drive belt system. It is engineered to meet the demands of various GM and Saab vehicles, including Cadillac Escalade, Chevrolet Silverado, GMC Sierra, Hummer H2, and Saab 9-7x models.

Compatible Vehicles and Applications

This accessory drive belt tensioner assembly is compatible with a wide range of vehicles, including:

  • Cadillac Escalade, Escalade ESV, Escalade EXT
  • Chevrolet Avalanche, Silverado 1500, 2500 HD, 3500 HD, Suburban 1500, 2500, 3500 HD, Tahoe, Trailblazer
  • GMC Canyon, Colorado, Envoy, Sierra 1500, 2500 HD, 3500 HD, Yukon, Yukon XL 1500, Yukon XL 2500
  • Hummer H2, H3, H3T
  • Saab 9-7x
  • Express 1500, 2500, 3500 and Savana 1500, 2500, 3500

Common Issues Addressed by the Dayco 89397 Tensioner

  • Eliminates belt slippage caused by improper tension
  • Prevents premature belt wear and damage
  • Reduces noise from loose or misaligned belts
  • Maintains consistent accessory drive performance
  • Helps avoid engine overheating due to belt failure

Installation Notes and Tips

When installing the Dayco 89397 tensioner, ensure the serpentine belt is properly routed according to the vehicle’s belt diagram. The automatic tensioner requires no manual adjustment but verify the pulley rotates smoothly in the counterclockwise direction. Inspect the belt for wear and replace if necessary to maximize system reliability.

Quality Assurance and Warranty

Dayco manufactures the 89397 tensioner assembly to meet or exceed OEM specifications, ensuring durability and reliable performance. While specific warranty details are not provided, Dayco products typically come with manufacturer-backed quality assurance to support long-term use in compatible Cadillac, Chevrolet, GMC, Hummer, and Saab vehicles.

BrandDayco
Part Number89397
Belt TypeSerpentine
DirectionCounter clock wise
Number of Pulleys1
Pulley 1 Diameter76
Pulley 1 FlatN
Pulley 1 Number of Grooves6
Pulley 1 Width28.7
TypeAutomatic

This part fits 290 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
2019ChevroletSuburban 3500 HDN/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 3500 HD6.0LV8N/A
2018ChevroletSuburban 3500 HDN/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 3500 HD6.0LV8N/A
2017ChevroletSuburban 3500 HDN/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 3500 HD6.0LV8N/A
2016ChevroletSuburban 3500 HDN/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 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
2014CadillacEscaladeN/A
2014CadillacEscalade ESVN/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 1500N/A
2014ChevroletTahoeN/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
2014GMCYukon5.3LV8N/A
2014GMCYukon6.2LV8N/A
2014GMCYukon XL 15005.3LV8N/A
2014GMCYukon XL 15006.2LV8N/A
2013CadillacEscalade6.0LV8N/A
2013CadillacEscalade6.2LV8N/A
2013CadillacEscalade ESVN/A
2013CadillacEscalade EXTN/A
2013ChevroletAvalancheN/A
2013ChevroletExpress 15005.3LV8N/A
2013ChevroletExpress 25006.0LV8N/A
2013ChevroletExpress 25004.8LV8N/A
2013ChevroletExpress 35006.0LV8N/A
2013ChevroletExpress 35004.8LV8N/A
2013ChevroletSilverado 15005.3LV8N/A
2013ChevroletSilverado 15006.0LV8N/A
2013ChevroletSilverado 15004.8LV8N/A
2013ChevroletSilverado 15006.2LV8N/A
2013ChevroletSilverado 2500 HD6.0LV8N/A
2013ChevroletSilverado 3500 HD6.0LV8N/A
2013ChevroletSuburban 15005.3LV8N/A
2013ChevroletSuburban 2500N/A
2013ChevroletTahoe5.3LV8N/A
2013ChevroletTahoe6.0LV8N/A
2013GMCSavana 15005.3LV8N/A
2013GMCSavana 25006.0LV8N/A
2013GMCSavana 25004.8LV8N/A
2013GMCSavana 35006.0LV8N/A
2013GMCSavana 35004.8LV8N/A
2013GMCSierra 15005.3LV8N/A
2013GMCSierra 15006.0LV8N/A
2013GMCSierra 15004.8LV8N/A
2013GMCSierra 15006.2LV8N/A
2013GMCSierra 2500 HD6.0LV8N/A
2013GMCSierra 3500 HD6.0LV8N/A
2013GMCYukon5.3LV8N/A
2013GMCYukon6.0LV8N/A
2013GMCYukon6.2LV8N/A
2013GMCYukon XL 15005.3LV8N/A
2013GMCYukon XL 15006.2LV8N/A
2013GMCYukon XL 2500N/A
2012CadillacEscalade6.0LV8N/A
2012CadillacEscalade6.2LV8N/A
2012CadillacEscalade ESVN/A
2012CadillacEscalade EXTN/A
2012ChevroletAvalancheN/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 15005.3LV8N/A
2012ChevroletSilverado 15006.0LV8N/A
2012ChevroletSilverado 15004.8LV8N/A
2012ChevroletSilverado 15006.2LV8N/A
2012ChevroletSilverado 2500 HD6.0LV8N/A
2012ChevroletSilverado 3500 HD6.0LV8N/A
2012ChevroletSuburban 15005.3LV8N/A
2012ChevroletSuburban 25006.0LV8N/A
2012ChevroletTahoe5.3LV8N/A
2012ChevroletTahoe6.0LV8N/A
2012GMCCanyon5.3LV8N/A
2012GMCSavana 15005.3LV8N/A
2012GMCSavana 25006.0LV8N/A
2012GMCSavana 25004.8LV8N/A
2012GMCSavana 35006.0LV8N/A
2012GMCSavana 35004.8LV8N/A
2012GMCSierra 15005.3LV8N/A
2012GMCSierra 15006.0LV8N/A
2012GMCSierra 15004.8LV8N/A
2012GMCSierra 15006.2LV8N/A
2012GMCSierra 2500 HD6.0LV8N/A
2012GMCSierra 3500 HD6.0LV8N/A
2012GMCYukon5.3LV8N/A
2012GMCYukon6.0LV8N/A
2012GMCYukon6.2LV8N/A
2012GMCYukon XL 15005.3LV8N/A
2012GMCYukon XL 15006.2LV8N/A
2012GMCYukon XL 2500N/A
2011CadillacEscalade6.0LV8N/A
2011CadillacEscalade6.2LV8N/A
2011CadillacEscalade ESVN/A
2011CadillacEscalade EXTN/A
2011ChevroletAvalancheN/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 15005.3LV8N/A
2011ChevroletSilverado 15006.0LV8N/A
2011ChevroletSilverado 15004.8LV8N/A
2011ChevroletSilverado 15006.2LV8N/A
2011ChevroletSilverado 2500 HD6.0LV8N/A
2011ChevroletSilverado 3500 HD6.0LV8N/A
2011ChevroletSuburban 15005.3LV8N/A
2011ChevroletSuburban 2500N/A
2011ChevroletTahoe5.3LV8N/A
2011ChevroletTahoe6.0LV8N/A
2011GMCCanyon5.3LV8N/A
2011GMCSavana 15005.3LV8N/A
2011GMCSavana 25006.0LV8N/A
2011GMCSavana 25004.8LV8N/A
2011GMCSavana 35006.0LV8N/A
2011GMCSavana 35004.8LV8N/A
2011GMCSierra 15005.3LV8N/A
2011GMCSierra 15006.0LV8N/A
2011GMCSierra 15004.8LV8N/A
2011GMCSierra 15006.2LV8N/A
2011GMCSierra 2500 HD6.0LV8N/A
2011GMCSierra 3500 HD6.0LV8N/A
2011GMCYukon5.3LV8N/A
2011GMCYukon6.0LV8N/A
2011GMCYukon6.2LV8N/A
2011GMCYukon XL 15005.3LV8N/A
2011GMCYukon XL 15006.2LV8N/A
2011GMCYukon XL 2500N/A
2010CadillacEscalade6.0LV8N/A
2010CadillacEscalade6.2LV8N/A
2010CadillacEscalade ESVN/A
2010CadillacEscalade EXTN/A
2010ChevroletAvalancheN/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 15005.3LV8N/A
2010ChevroletSilverado 15006.0LV8N/A
2010ChevroletSilverado 15004.8LV8N/A
2010ChevroletSilverado 15006.2LV8N/A
2010ChevroletSilverado 2500 HD6.0LV8N/A
2010ChevroletSilverado 3500 HD6.0LV8N/A
2010ChevroletSuburban 1500N/A
2010ChevroletSuburban 2500N/A
2010ChevroletTahoe5.3LV8N/A
2010ChevroletTahoe6.0LV8N/A
2010GMCCanyon5.3LV8N/A
2010GMCSavana 15005.3LV8N/A
2010GMCSavana 25006.0LV8N/A
2010GMCSavana 25004.8LV8N/A
2010GMCSavana 35006.0LV8N/A
2010GMCSavana 35004.8LV8N/A
2010GMCSierra 15005.3LV8N/A
2010GMCSierra 15006.0LV8N/A
2010GMCSierra 15004.8LV8N/A
2010GMCSierra 15006.2LV8N/A
2010GMCSierra 2500 HD6.0LV8N/A
2010GMCSierra 3500 HD6.0LV8N/A
2010GMCYukon5.3LV8N/A
2010GMCYukon6.0LV8N/A
2010GMCYukon6.2LV8N/A
2010GMCYukon XL 15005.3LV8N/A
2010GMCYukon XL 15006.2LV8N/A
2010GMCYukon XL 2500N/A
2010HummerH35.3LV8N/A
2010HummerH3T5.3LV8N/A
2009CadillacEscalade6.0LV8N/A
2009CadillacEscalade6.2LV8N/A
2009CadillacEscalade ESVN/A
2009CadillacEscalade EXTN/A
2009ChevroletAvalanche5.3LV8N/A
2009ChevroletAvalanche6.0LV8N/A
2009ChevroletColorado5.3LV8N/A
2009ChevroletExpress 15005.3LV8N/A
2009ChevroletExpress 25006.0LV8N/A
2009ChevroletExpress 25004.8LV8N/A
2009ChevroletExpress 35006.0LV8N/A
2009ChevroletExpress 35004.8LV8N/A
2009ChevroletSilverado 15005.3LV8N/A
2009ChevroletSilverado 15006.0LV8N/A
2009ChevroletSilverado 15004.8LV8N/A
2009ChevroletSilverado 15006.2LV8N/A
2009ChevroletSilverado 2500 HD6.0LV8N/A
2009ChevroletSilverado 3500 HD6.0LV8N/A
2009ChevroletSuburban 15005.3LV8N/A
2009ChevroletSuburban 15006.0LV8N/A
2009ChevroletSuburban 2500N/A
2009ChevroletTahoe5.3LV8N/A
2009ChevroletTahoe6.0LV8N/A
2009ChevroletTahoe4.8LV8N/A
2009ChevroletTahoe6.2LV8N/A
2009ChevroletTrailblazer6.0LV8Main Drive
2009GMCCanyon5.3LV8N/A
2009GMCEnvoy5.3LV8N/A
2009GMCSavana 15005.3LV8N/A
2009GMCSavana 25006.0LV8N/A
2009GMCSavana 25004.8LV8N/A
2009GMCSavana 35006.0LV8N/A
2009GMCSavana 35004.8LV8N/A
2009GMCSierra 15005.3LV8N/A
2009GMCSierra 15006.0LV8N/A
2009GMCSierra 15004.8LV8N/A
2009GMCSierra 15006.2LV8N/A
2009GMCSierra 2500 HD6.0LV8N/A
2009GMCSierra 3500 HD6.0LV8N/A
2009GMCYukon5.3LV8N/A
2009GMCYukon6.0LV8N/A
2009GMCYukon4.8LV8N/A
2009GMCYukon6.2LV8N/A
2009GMCYukon XL 15005.3LV8N/A
2009GMCYukon XL 15006.0LV8N/A
2009GMCYukon XL 15006.2LV8N/A
2009GMCYukon XL 2500N/A
2009HummerH26.2LV8N/A
2009HummerH35.3LV8N/A
2009HummerH3T5.3LV8N/A
2009Saab9-7x5.3LV8Main Drive
2009Saab9-7x6.0LV8Main Drive

* 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:

39083

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

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