Case Study: General Motors restores vehicle communication reliability with ALLDATA

General Motors fixes a chafed CAN wire in 1 repair with Alldata

The customer, General Motors (GM), faced a diagnostic challenge with a 2018 Chevrolet Malibu that was experiencing communication faults on its CAN bus network. Despite initial electrical tests appearing normal, a scope reading revealed a noisy signal. GM and its technicians utilized service information from vendor Alldata to identify the root cause of this elusive problem.

The solution, guided by a specific GM service bulletin found via Alldata, was a hands-on visual inspection which located the issue: the engine control module harness had chafed on the battery tray, causing an intermittent short. Alldata's resources provided the critical insight needed to resolve the problem efficiently. The repair involved fixing the wire and rerouting the harness, which completely eliminated the communication fault and successfully closed the case.

General Motors (GM)