Throttle Position Sensor
 

I have an 05 2500 5.9L turbo that has a throttle position sensor issue. When I purchased the truck it had Bully Dog installed. I've replaced the throttle peddle twice with no luck. One day it may work fine without the check engine light on but the next day the check engine light may come on and shows an error in the TPS. Anyone have an idea on how to fix this problem?