flaring, mostly in 1st and second. Well you can pretty much rule out the torque convertor. have you checked your tranny fluid yet? low fluid levels could cause slipping in the tranny. also smell it, if its burnt, time to flush and replace. suppose to flush the tranny at 30,000 miles. low fluid, sticking pressure regulating valve or solenoids, worn clutch packs can all cause slipping ( like the problem your describing toolebox ).