Hi Stig, I want to say thank you for your post on how to change injectors. It help me a lot I change the six injectors on my 2003 2500. I need help with my truck now, it vibrates or better yet shakes violently at speeds of 25 to 40 mph. Any ideas on what this could be? I change the steering stabilizer bar bushings in the Ball joints were changed about 25,000 miles ago. It has new tires 20000 miles ago. Thanks