i took my 2004 auto in for a check of the rear end, that has a whine at about 50 mph. the service department said their computer says to replace diff. but the extended warranty that i bought at time of purchase is a preferred warranty and does not cover the work. i paid 1600.00 extra and thought it was a good 3 year extenstion of bumper to bumper. has anyone had the same problem with rear end or warranty. i hate to sell it but i might just have to get so good service,
