Can anyone share with me the proper procedures for doing a tune up on a 00 concorde lxi, 3.2 engine? Also, i had front & rear pads replaced on car. Front were done 2 months ago & the still sqeak when car warms up. A friend suggested that I could sand the rotors (with sandpaper)to eliminate this problem versus paying to have them turned. Does this really work? Thanks 4 ur input