Some Cadillac CTS-V owners report experiencing supercharger rattling issues due to a common defect in the supercharged 6.2-liter LSA V-8 engines found in certain models. This problem can manifest as a noticeable rattle noise at idle, particularly in 2009-2013 CTS-Vs and 2012-2013 Camaro ZL1s, which may diminish as engine revs increase. Affected owners are advised to have the supercharger inspected by a qualified technician, as it may require replacement to resolve the defect. Additionally, 2014 Cadillac CTS-V owners have reported excessive rattling or knocking noises from the engine supercharger bearings, a concern acknowledged by the manufacturer that may warrant a replacement. For those needing a replacement supercharger, it is recommended to follow specific procedures outlined in the service manual for models serviced after November 2013. Addressing these rattling issues promptly is crucial to prevent further complications or damage, and consulting with a certified mechanic or dealership familiar with these models can facilitate accurate diagnosis and resolution.

Some Nissan Pathfinder owners report experiencing stalling issues after 15 minutes of driving, which can often be resolved by replacing the crankshaft sensor. However, if a knocking sound continues even after this replacement, owners may encounter additional problems such as low oil levels, ignition issues, timing problems, worn rod bearings, or faulty knock sensors. A malfunctioning knock sensor may lead to engine knocking and could trigger a trouble code like P0325. Furthermore, worn rod bearings, situated between the crankshaft and piston rods, are known to produce knocking sounds. If the check engine light remains illuminated after the crankshaft sensor replacement, it might indicate improper installation or unrelated issues with the fuel or ignition systems. While a faulty crankshaft sensor can indirectly contribute to engine knock by sending inaccurate data to the engine control module, it is not typically a direct cause of knocking sounds. Therefore, if the knocking persists, further investigation into these potential causes is advisable.