Re: 2009 Expedition Transmission Problem
I'd check with the TSBs, the dealer can look up your VIN to make sure all related TSB and recalls were performed for your vehicle. If you have previous maintenance records, that's a bonus. If a transmission service (fluid and filter change) hasn't been performed in the last 40K, get it done.
If you notice any gear whine then you have a possible axle problem. If you notice a 'clunk' when placing the shifter from park to reverse or park to drive then there's a high probability you require new U-joints.
As it's been a week since you posted this did you get an outcome yet?
'11 Ram Quad Cab 4x4 SXT 5.7L HEMI (stock); 48,500m
'06 Pontiac G6 GT 3.5L 220hp; 64,000m
'12 Chrysler 200 Limited 3.6L 283hp; 28,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!