Two problems related to brake disc caliper have been reported for the 2008 Nissan Frontier. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Nissan Frontier based on all problems reported for the 2008 Frontier.
Left rear axle seal failed and grease from axle coated caliper and brake disc, rendering braking ineffective on that wheel. This is a known issue with Nissan with a technical service bulletin (ntb100008) issued, but Nissan only selectively applies the repair. Grease coating the brake appears visually the same as brake dust, and owner's manual requires inspection of seals only every 7500 miles, so braking may be lost for a considerable period of time before discovery. Serious accident was narrowly avoided on 10-14-2011, ironically on return from dealer, when car ahead stopped in lane to turn left; hard braking and swerve into right lane avoided collision but truck stopped with front grill at same point as front seat in the stopped car.
I have a 8 month old Frontier Nissan vehicle , with just 1 service on time everything - the failure I got a loose nut on the rear brake caliper - while I was driving downhill on a mountain with snow - lost all brake fluids and brake systems just went hard to work and not a uniform brake. To correct I went to dealer and they said they just re-torque the nut and that's it.