🚛 Having trouble with your truck's ECM (Engine Control Module)? Here's a quick way to diagnose potential issues: 1️⃣ Use a bench harness to connect the ECM. 2️⃣ Attach a power supply and communication adapter. 3️⃣ Verify communication - if unsuccessful, it indicates a potential ECM issue. While not a complete test, this method can be a helpful first step. 🛠️🔧Facing ECM problems with Cummins, CAT, Detroit, or Paccar engines? Leave a comment with your specific issue and the engine type. I'm Osc