Replacing the transmission fluid, filter, and pan gasket on a 2011 Chevy Silverado 1500 with a 6L80 transmission. Removing the transmission oil pan is complicated by the exhaust cross tube. The procedure calls for dropping the catalytic converter ypipe. The likely corroded exhaust bolts have limited access and are further impeded by the oxygen sensors. For this reason, I replaced the filter and pan gasket without fully dropping the pan. It worked well for me, and may save you some headache as well. If you use this method, I would highly recommend CLEANING THE AREA prior to starting. You'll also need a fluid suction pump of some kind.

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I would recommend buying the filter and pan gasket from the GM dealer. Giving your dealer the VIN will ensure you get the right filter and pan gasket the first time.

The 6L80, 6speed transmission, has numerous applications after 2006, including; Silverado, Suburban, Tahoe, Avalanche, Corvette, Sierra, Yukon, and Cadillac. It's most commonly found in the 1500 series Chassis.

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CHAPTERS
0:00 Getting Started
0:25 Pan Removal
0:56 Filter Removal
1:12 Cleaning the Pan
1:52 A look inside
2:00 Gasket & Filter Install
2:42 Torque & Clean
2:55 Adding Fluid & Checking Level