OK, manufacture date sept/ 05. 4700miles. code 2609 if I remember: intake heater grid. (fixed) also code for wheel speed sensor (fixed) bad fuel milage : 10-12 in town maybe 17 on the road. seat clunks on accel. lumbar support "unwinds" from setting in about 20 miles. Hum from rear end @ 70. Paint/clear coat is micro thin and very vunerable. Now hearing a turbo whine that was not audible when newer (two months ago) Whats next? (still love the truck tho... Mostly the cummings)