Join Date: May 2011
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My 2001 has that exact problem. Dealer checked all the vacuum lines even giving the hubs direct vacuum but nothing helped. I just put my truck in park, get out lock the hubs, put tranny in neutral, switch to 4x4, put in drive and truck is locked.
'99 Ford F-350 dually, Crew Cab 4x2 w/ 7.3L (Totaled- rebuild coming soon)
'01 Ford F-250 Crew Cab 4x4 shotbed w/ 7.3L