Diagnostic Information and Procedures: Vibration
WARNING: This page is about a different car, the 2023 GMC Sierra 3500 HD and 2023 GMC Sierra 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
| Checks | Causes |
|---|---|
| Transmission Case Extension (68) | Inspect for damaged case extension. |
| Automatic Transmission Case (13) | Inspect for cracked or damaged transmission case. |
| Torque Converter (1) | Inspect torque converter. Flex Plate/Torque Converter Vibration Test |