P1613 on a GM vehicle means the Body Control Module (BCM) or another module on the serial data bus has lost communication with the Driver Information Module (DIM), which is the instrument cluster that displays mileage, warnings, and driver messages. The computer detected a missing or intermittent serial data message from the DIM over the class 2 or GMLAN data circuit, not a failure inside the DIM itself.
Guidance is general and written for GM vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
Get the app
Quick access from your home screen.