Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Description And Operation: Notes
DESCRIPTION
| 1. | Refer to AVC MODULE . |
| 2. | Refer to AVC SENSOR/ACTUATOR ASSEMBLY . |
OPERATION
The AVC system consists of two electronic actuators, two electronic sensors and the AVC controller. The AVC actuators produce anti-vibrations to reduce Multi-Displacement System (MDS) vibrations above 1, 300 Revolutions Per Minute (RPM). MDS is the "4 cylinder mode" for the 5.7L V8 engine. The AVC system is a key enabler for expanding the MDS operating range to improve vehicle performance and fuel economy. The AVC actuators function to minimize vibrations on the vehicle's frame at the frequency the engine is operating/running. The system works similar to Active Noise Cancelation (ANC). ANC operates on audible noise. AVC operates on vehicle frame vibrations.
The AVC system is designed to improve the Noise Vibration Harshness (NVH) performance of the vehicle by reducing the vibrations received from the frame. The AVC actuator generates an equal signal in the opposite direction from the input vibrations received from the left and right correction sensors. This generated signal is sent to the left and right actuators mounted on the frame that reduce the vibrations in the frame.
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.