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Finally got around to installing my OD lockout switch tonight. Now I must make a dreaded trip to the dealer (first return to the dealer since I drove off the lot - 38,000 miles ago) to have the TCM updated so it will function. A few questions for guys who had this done already: What is the easiest way to ask for this? (TSB #?) My dealer is "Duramax Dumb", and I wish this to be as painless as possible. I know it's a simple thing, but sometimes it's the simple things that really confuse people. Also, is this something I'm gonna have to pay for? Thanks.


Josh
 

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