In this video I show how to replace the AC belt, Serpentine Belt and the Idler pulley on my 2021 GMC Yukon 5.3L V8. The 6.2L will have a similar procedure just check your part numbers before ordering. My belt was starting to show fray and wear at around 63,000 miles on the truck. ============================================================ AC Belt GM Part #: 12637349 (or 12658178) - https://amzn.to/3CY88xx AC Belt Gates Part #: K040337SF - https://amzn.to/3EKm1zZ ============================================================ Serpentine Belt GM Part #: 12669858 - https://amzn.to/41l33sk Serpentine Belt Gates Part #: K060667SF - https://amzn.to/4gIkV51 ============================================================ Idler Pulley GM Part #: 12720530 - https://amzn.to/4b2NIjw ============================================================ Breaker Bar Ratchet Attachment: https://amzn.to/4hSNvSs ============================================================ Follow me on Facebook: / fondupotsgarage Check out my Amazon Store Front! https://www.amazon.com/shop/fondupots... Other stuff I like to use: Get Amazon Prime: https://amzn.to/2RdYigg Work Gloves: https://amzn.to/37jel2a Disposable Gloves: https://amzn.to/3ix19xT Milwaukee Impact Wrench: https://amzn.to/2RgJJJ5 Makita 12v Impact and Drill Set: https://amzn.to/2TW5gIP Makita 18v Impact and Drill Set: https://amzn.to/30GVyLy Makita 18v Impact Brushless: https://amzn.to/3DcmG8D Makita Drill Bits set: https://amzn.to/37ie538 Go Rhino! Digital Pressure Inflator: https://amzn.to/2G8x6t8 Dewalt Socket Set: https://amzn.to/2GdmUzq Craftsman Torque Wrench: https://amzn.to/30GZzQd eTORK inch/lb Torque Wrench: https://amzn.to/3NiUwxh Trim Removal Tools - https://amzn.to/455uJBb Oil Drain Pan: https://amzn.to/2vbQZ08 Oil Pump: https://amzn.to/36fxyAf Fluid Transfer Pump: https://amzn.to/37LUcH5 Shop Towels: https://amzn.to/2NLimok Chemical Guys Inner Clean: https://amzn.to/3azFvDE --As an Amazon Associate I earn from qualifying purchases.