How to replace Transmission Filter for 2020 GMC Sierra 6.2L Engine #GMC #Diy #Mechanic #Sierra

Tools and Supplies Needed -New ACDelco transmission filter and pan gasket, Dexron ULV (Ultra-Low Viscosity) -automatic transmission fluid (approx. 8–9 quarts for a standard pan drop) -Metric socket set (10mm for pan bolts) -E-Torx socket set (E10 or E12) for the filter bolts -8mm Allen socket (for fill/check plug) -Fluid transfer pump -Brake cleaner and clean rags Drain pan and safety glasses/gloves Step-by-Step Replacement Instructions 1. Prep and Cool DownPark on a flat surface, set the parking brake, and let the exhaust and transmission cool down completely to avoid severe burns.Raise the vehicle securely on jack stands or a hoist. 2. Clear Exhaust ClearanceThe exhaust Y-pipe often blocks the transmission pan on the 6.2L 10-speed setup.Spray exhaust nuts with penetrating fluid, remove the O2 sensor wire clips if necessary, and carefully loosen or partially lower the Y-pipe/exhaust hanger to get enough clearance to slide the pan out. 3. Drain the Transmission FluidPlace your drain pan underneath the transmission.Remove the fill plug first to ensure it isn’t stuck, then remove the drain plug (if equipped) or slowly loosen the transmission pan bolts starting from one end to let the fluid drain gradually and minimize spills.Remove all pan bolts and carefully take off the transmission pan and old gasket. 4. Replace the Transmission FilterLocate the filter secured inside the valve body by two E-Torx bolts.Remove the bolts and pull the old filter straight down. Be ready for a little extra fluid to gush out.Ensure the old rubber seal/grommet comes out of the bore and does not stay stuck inside.Lubricate the new filter’s O-ring seal with fresh transmission fluid.Push the new ACDelco filter firmly up into place and secure it with the E-Torx bolts, tightening them to manufacturer specifications (typically around 80–93 inch-pounds depending on exact bolt size). 5. Clean the Pan and ReinstallWipe out the pan with brake cleaner and clean paper towels. Clean any metal debris off the transmission pan magnets and put them back in their exact original locations.Install the new pan gasket onto the clean pan flange.Reinstall the pan to the transmission housing, hand-tightening the 10mm bolts evenly in a cross pattern, then torque them to spec (approx. 65–80 inch-pounds).Reattach the exhaust components and torque hardware back to factory specifications. 6. Refill and Check Fluid LevelPump fresh Dexron ULV fluid back into the fill hole until it begins to overflow.Start the engine, let it idle, and cycle through all the gears (holding on the brake for 3 seconds per gear), then return to Park.With the engine running and the transmission fluid up to proper operating temperature (approx. 167°–176°F), remove the fill check plug and add more fluid until it reaches the edge of the fill hole and just begins a light drip. Reinstall the fill plug securely