odometer malfunction

[67 chop top]

i have an 04 silverado 4wd 2500lt 4door, the problem im getting is when i crank the truck the odometer comes up flashes mileage one time or driver 1. it then starts prompts for language. pushing odometer reset button has no effect at all. i noticed opening driver door with engine off and key off the mileage would come on and stay on for a couple minutes. i unplugged harness from door and checked wiring into door and found speaker bad. plugged door back in everything worked. odometer read english. about two weeks later crank truck and its asking for language again. im not sure what to look for now because door i know is the problem. any help would be greatly appreciated. thanks