I have a 2011 f350 srw 4x4 6.7. 37000 miles. Front left caliper seized up(lower piston). Repaired under extended warranty along with my $100.00 deductible. One would think for 50k Ford could spring for a caliper that would last more than 17 months, perhaps their quality statements are more of a pipe dream. I believe they have a problem on this side or truck as there is always more brake dust on the left wheel. Any of you had similar problem??