I have not been able to use the overdrive button on my automatic tranny shifter. When I push it, nothing happens. I looked in the owner's manual, and replaced fuse #26, which the manual lists as for: 5R55E/4R7OW overdrive, DRL system, backup lamps, AWD, rear defroster I do not know what the first line means. Also, I do not know if this is related, but one of the wires that goes to the switch controlling 4wd was out. The dash light for 4wd was flashing. I replaced the wire and 4wd works, but have run out of fuses to test with. I just wanted to see if that could have caused the fuse to blow. It says AWD for #26 in the manual, not sure if that is the same as 4wd. 1997 Ford Explorer eddie bauer 4wd. I am unemployed right now and cannot afford a mechanic. But I am getting really bad gas mileage(13 mpg). I am hoping it is because the OD is not working and fixing this will save gas. Thanks!