Raypat Report post Posted October 22, 2019 3000 on DP; blows ECM 10 amp fuse on hard bumps . Cummings San Leandro 2015 and Allison Las Vegas 2018 shops humored me . Problem getting worst . 1200 mi. run replaced fuse 11 times in heavy highway too; Sacramento I 5. Any ideas?? Share this post Link to post Share on other sites
wolfe10 Report post Posted October 22, 2019 Raypat, Welcome to the FMCA Forum. Either a problem in the Allison ECU or just as likely an issue in the wire from fuse box to ECU. Before spending too much time diagnosing, I would run a new wire and remove the old one. If that doesn't address your problem, here is the guy to contact: https://www.transmissioninstruments.com/ Share this post Link to post Share on other sites
