Any help would be appreciated... this vehicle was towed into the shop customer said lights in dash and radio went off and on then the vehicle died on her while driving.The customer could not get the key out of the ignition so they had a pop a lock person remove the lock cylinder to get the key out.I replaced the battery,VTD ignition lock case and lock cylinder (due to damage).No communication with ECM lost EBCM when battery failed giving me astrick symbols for programming info.class 2 data line voltage low at .25v. Have used schematics and diagnostic chart to narrow down class 2 data line to the ring for ecm dim radio etc removing spice packs to eliminate other lines.Now I am starting to remove modules from the data line but still low voltage.Any ideas were I can narrow this down its a whole lot of wiring to test.Thanks

Amanda

Amanda Hodge
Technician
Peltier Chevrolet
Bullard, Texas, USA