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Click Here for Video We created a detailed guide showing all the steps necessary to flush your 6L80 and 6L80E (E denotes electronically controlled) transmission and change the filter. This guide can also be used to do a transmission fluid change. This video was created using my 2014 Silverado 1500 with the 5.3L V8. For this vehicle, GM recommends that the transmission fluid and filter are changed (not flushed) every 97.5K miles for regular service and 45K miles for severe service. The 6L80 /6L80E Transmission is used in the following vehicles: Chevrolet Corvette Cadillac XLR Cadillac STS Cadillac XLRV Cadillac STSV Chevrolet Avalanche Chevrolet Silverado Chevrolet Suburban Chevrolet Tahoe GMC Sierra GMC Yukon Cadillac Escalade Hummer H2 Pontiac G8 ******************************************************************** Parts (Affiliate) ******************************************************************** Transmission Pan Gasket GM PN 24224781 ACDelco https://amzn.to/2r0agfe Transmission Filter GM PN 24236933 AC Delco https://amzn.to/2r2j2JM ******************************************************************** Tools (Affiliate) ******************************************************************** Pick Tools: https://amzn.to/2r0ZV2I 1/2" Clear Tube: https://amzn.to/2I0N74m 3/8" Clear Tube: https://amzn.to/2r4e27h Milwaukee Cordless Impact: https://amzn.to/2r1xQrU Transmission Funnel: https://amzn.to/2Kgqb1V From the GM Owner's manual for my 2014 Silverado: ******************************************************************** When to Check Fluid Level ******************************************************************** ******************************************************************** How to Check Fluid Level ******************************************************************** ******************************************************************** When to Change Fluid ******************************************************************** Regular Service: Every 97,500 Miles Severe Service: Every 45,000 Miles ******************************************************************** Recommended Fluid ******************************************************************** DEXRON®-VI Automatic Transmission Fluid. (I use AMSOIL ATF Fluid) https://www.amsoil.com/shop/by-product/transmission-fluid/automatic/signature-series-fuel-efficient-synthetic-automatic-transmission-fluid/?code=ATLQT-EA ******************************************************************** Capacity & Torque Specs ******************************************************************** The following capacities are taken from AMSOIL.com for the 2014 Silverado 1500 with the 5.3L V8. Always refer to your owner's manual for factory recommendations. Fluid Change Only = 6 Qts. Fluid Flush = 12.2 Qts. Fluid Flush with HD Cool = 12.4 Qts. Transmission Pan Bolts Torque = 80 in-lbs ******************************************************************** Relevant Videos ******************************************************************** How to Change Rear Differential Fluid: https://youtu.be/ndDNH3DCzzE How to Change Front Differential Fluid: https://youtu.be/yhjNsAoQllc How to Change Transfer Case Fluid: https://youtu.be/HyHXnjg_lZ4