One problem related to grinding noise has been reported for the 2005 Nissan Titan. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Nissan Titan based on all problems reported for the 2005 Titan.
I drive 2005 Nissan Titan truck 99. 9% of the time in 2 wheel drive on highway w/o towing. At 17,500 miles the rear end made a loud banging noise and then grinding noise. Rear end failed first time. At 21, 500 miles same thing happened again!.