Did you know... That you can decide what service letters you receive from Detroit Diesel? Sign up for the Detroit Diesel Document Distribution System and you can start receiving service letters right now! Here's how: Make sure you have your own unique DDCSN ID and Login. Don't have one...contact your local administrator to obtain your ID and login. Once you have your ID move on to step 2. After you have logged into DDCSN.com, Click on "Member Services" located in the top right corner of the DDCSN website. Click on "Edit Profile." Fill out the form and the email where you want us to send your service information. Click "Submit." Click on "View/Edit Document Distribution Selections." Select the documents you wish to receive and click "Save Changes." That's it. You will begin receiving the documents you selected immediately. Thanks for signing up.