disconnect battery negative cable,use a jump wire from positive on battery to negative cable ( not the battery post ! ) This will clear the computer memory capacitors. hold the jumper there for about 1 minute. Reconnect negative cable. Turn key to ON position,but do not start till it chimes out or about 20 seconds.Start the engine and let idle till normal operating temp, about 10-15 minutes. It will learn it's new idle, then drive normal for it to learn shift points again. It worked for me )