PDF ONLINE PDF ONLINE – Mack Service Manual – Trucks Engine Control Module (ECM), Diagnostic Trouble Code (DTC), Guide for CHU, CXU, GU, TD By Todd Mitchell On: Wednesday, November 22, 2023 9:23 PM Mack Service Manual – Trucks Engine Control Module (ECM), Diagnostic Trouble Code (DTC), Guide for CHU, CXU, GU, TD