Buick Enclave power loss and shaking issue after 100,000 miles following engine and power steering pump replacement on Buick Enclave

Some Buick Enclave owners report experiencing power loss and shaking issues after 100,000 miles, particularly following engine and power steering pump replacements. These problems may be associated with the common engine power reduction issue reported in Buick Enclaves. Additionally, the shaking could be linked to a malfunction in the recently replaced power steering system. Owners have noted that potential causes for engine power reduction include loose connections, faulty sensors, a bad ECU, clogged catalytic converters, transmission faults, battery problems, worn spark plugs, or low oil levels. Furthermore, some owners highlight the risk of system failures triggering the Engine Power Reduced mode, which can limit throttle response and potentially shut off the fuel pump, leading to the vehicle stopping unexpectedly. It is recommended that affected owners seek inspection from a qualified mechanic to accurately diagnose and resolve these issues.