How do you replace a transmission pan gasket on gmc savana 1500?

To replace the transmission pan gasket on a GMC Savana 1500, start by safely lifting the vehicle and securing it on jack stands. Drain the Transmission Fluid by removing the transmission pan bolts, then gently pry the pan loose to avoid damaging it. Clean the mating surfaces thoroughly, install the new gasket, and reattach the pan with the appropriate torque specifications. Finally, refill the transmission with fluid as per the manufacturer's recommendations and check for leaks.