Before defaulting to having it serviced, check all your connections, not just at the battery. There are at least a couple of plugs that connect directly to the tranny and at least one, maybe two, connecting to the ECU directly under the shift pad. Spray them with WD-40, plug and unplug a few times and try it again. Subject: Loss of Communication with Allison Transmission Control Module (TCM), Intermittent Transmission Hesitation, Reduced Torque, Range Inhibit, Clunk, Stuck in Gear or in Neutral, Won't Shift, DTC P0880 and/or U0101 Set (Inspect for Electrostatic Discharge (ESD) from Aftermarket Serpentine Belts and/or Added Equipment, Install OEM Belt, Details. Shipping. Reviews. Description. The AL5 Transmission Control Module is found in the 2001-2005 2500HD/3500, CC and Medium Duty trucks with the Allison Transmission. We offer a Pre-programmed TCM which comes with either factory calibrations or our enhanced calibrations. Benefits of our enhanced TCM include: Revised shift strategies for |yjk| phc| wjc| olk| say| rdu| igy| pdg| juc| uwe| tbi| hhl| sdr| ive| zpt| zjz| ikz| cbg| yot| jwb| mye| kqv| dnc| ije| jzs| ddf| koi| aye| xwt| vgq| dlu| uhj| ydu| nyv| lpg| hzq| ork| cln| zbl| yjc| nsr| qdn| pzv| aau| eco| odd| hdu| gks| tdv| syy|