Rant: the dealer told me my warranty was void for using a $22 cabin filter from O'Reilly
Did some digging and found out the Magnuson Moss Act says they can't void your whole warranty just because you used aftermarket parts, they have to prove the part caused the failure. Called corporate on the service manager here in Tulsa and suddenly that $600 'diagnostic fee' vanished. Anyone else ever get hit with that voided warranty scare tactic at the counter?