FORD 2004 Expedition v.3 - Manual (Page 347)

Transmission/Transaxle code designations
You can find a transmission/transaxle code on the vehicle certification
label. The following table tells you which transmission or transaxle each
code represents.
Truck application:
Code Transmission Description
Manual transmission
M Manual 5–speed (AKK))
C Manual 5–speed overdrive (Close ratio)
W Manual 5–speed overdrive (Dana ZF)
G Manual 6–speed ZF
Automatic transmission
Y Automatic 4–speed overdrive (CD4E)
U Automatic 4–speed overdrive (4R70W)
T Automatic 4–speed overdrive (4R44E)
E Automatic 4–speed overdrive (4R100)
J Automatic 5–speed overdrive (5R55E)
2004 Expedition (exd)
Owners Guide (post-2002-fmt)
USA English (fus)
Maintenance and Specifications
347