2007 isx cm870... PLZ HELP

[Chamberpains]

Also with the trucks you bought your going to need Cummins Insite (ver 7.6.2) and an inline 5 or 6 adapter. Ebay has lots of deals. Many of us use the chinese ones with no problems. But if you want to keep your maintenance in your hands (trust me you do) you need to get a laptop and Insite. Other than that you will certainly be throwing $$ away to incompetent stealerships and reckless mechanics.
For the cost of 3 hrs labor at most shops you can have complete control.