Zas Karson 
2002 Nissan Frontier Crew Cab 4dr Crew Cab XE-V6 4WD LB (3.3L 6cyl 5M)
Lots of problems with the 4WD
 I live in Colorado and use 4WD a lot during the winter.  I frequently experience problems shifting from 2WD to 4WD and usually I must come to a complete stop in order to make the transfer successfully. The dealer has tried to repair the problem twice with no success.  I am a four time repeat Nissan truck buyer, but I think this may be my last.