Can a Faulty Suspension System in the LaCrosse Cause Bouncing?
2 Answers
Can a Faulty Suspension System in the LaCrosse Cause Bouncing? A faulty suspension system in the LaCrosse can indeed cause bouncing. Fault Diagnosis: After disconnecting and reconnecting the ignition switch, the warning message on the instrument cluster disappears, but the fault reappears after driving for a while. Using a fault detection tool, the retrieved fault code is C0590—Right Rear Actuator Circuit. Upon checking the suspension control module data stream, the command current for the right rear shock absorber actuator is 0mA, while the command currents for the other three shock absorber actuators are around 100mA. This indicates that the right rear shock absorber actuator is not functioning, suggesting a fault in the right rear shock absorber actuator or its wiring. Fault Summary: The suspension control module directs varying levels of current to each shock absorber actuator based on driving conditions such as uneven roads, braking, or sudden steering maneuvers. The suspension control module continuously measures the actual current of each shock absorber actuator. When a discrepancy between the commanded current and the actual current is detected, a fault code is set.
Having driven the LaCrosse for over a decade, I've gained deep insights into suspension issues. If there's a fault in the suspension system, the bumpiness becomes noticeably pronounced, primarily due to problems with the shock absorbers or springs. Normally, small potholes and speed bumps can be traversed smoothly, but when faulty, the ride becomes exceptionally bumpy with increased body sway, sometimes even causing vibrations felt through the steering wheel. Particularly, if there's abnormal noise or oil leakage in the front suspension, driving on uneven roads feels like being tossed around in a small boat. It's not just about the bumpiness; high-speed cornering also feels unstable, and tire wear accelerates. If you notice metallic clunking sounds over speed bumps, significant body sagging, or abnormal swaying while driving, it's advisable to promptly inspect the suspension components.
