My truck is not shifting correctly on 2003 Ford F-350 Super Duty

Truck won't downshift into low range or up shift into high range. Tow/Haul switch is flashing on and off

by in Wentzville, MO on December 10, 2012
1 answer
ANSWER by on December 10, 2012
Yikes! you might have a problem with the transmission
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