mackncheese Posted December 2, 2017 Share Posted December 2, 2017 My local dealer’s service manager doesn’t know about the 12 B programming for the vehicle ECM. The search function of the site is not working for me. I thought someone posted the official Mack paperwork on the 12 B programming. Would someone post it again, please. Thanks for your time. Quote Link to comment https://www.bigmacktrucks.com/topic/51840-step-12-b-programming/ Share on other sites More sharing options...
Mackpro Posted December 2, 2017 Share Posted December 2, 2017 The service manager can pull it up on "VMAC online" in dealer portal or make a E-service to Mack and see if it's available . Quote Link to comment https://www.bigmacktrucks.com/topic/51840-step-12-b-programming/#findComment-386364 Share on other sites More sharing options...
hatcity Posted December 2, 2017 Share Posted December 2, 2017 29 minutes ago, Mackpro said: The service manager can pull it up on "VMAC online" in dealer portal or make a E-service to Mack and see if it's available . OR!!! find a better dealer to work with Quote Success is only a stones throw away.................................................................for a Palestinian Link to comment https://www.bigmacktrucks.com/topic/51840-step-12-b-programming/#findComment-386368 Share on other sites More sharing options...
Bigjohn4300 Posted March 13, 2018 Share Posted March 13, 2018 Ill have to second what "HatCity" said, my local dealer couldnt/wouldnt take mine from 9b to 12b, but a dealer 80 miles away did it. They had to fool with it quite a bit, took three attempts to get it to take, but they got it. Didnt correct my main issue of intermittent low power, but it did reduce its severity and frequency i believe. But it did introduce a 10 minute idle shutdown i didnt have before, need to see if the local dealer can kill that off Quote Link to comment https://www.bigmacktrucks.com/topic/51840-step-12-b-programming/#findComment-394063 Share on other sites More sharing options...
Mackpro Posted March 14, 2018 Share Posted March 14, 2018 Programming the ECM's on the grey motors is not easy as it has lots of different steps involved. And if your replacing a ECM its even worse. Thats one good thing about the MP engines. Programming is super easy and any one in the shop could do it. Quote Link to comment https://www.bigmacktrucks.com/topic/51840-step-12-b-programming/#findComment-394098 Share on other sites More sharing options...
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