From The Car Connection, we’ve learned that GM has discovered a potential issue with the supercharger used on the company’s LSA engine, found in the Camaro ZL1 and 2009-present Cadillac CTS-V. It seems that it’s possible for the supercharger drive shaft bearing lube to become contaminated, which can lead to failure.

LSA owners who have upgraded their supercharger with a smaller-diameter pulley may have an uphill climb to receive warranty service on this issue…

Early symptoms include a rattling noise at idle that disappears as the engine is revved, while more advanced cases of contamination and wear are characterized by a loud squeal and bearing failure. While the company isn’t recalling cars equipped with the LSA powerplant, they are extending the warranty specifically to cover this potential problem to 120,000 miles or ten years.

Notably not included in the recall is the C6 Corvette ZR1, which uses a similar but larger displacement supercharger on its LS9 powerplant. Also worth noting is the fact that many owners upgrade their superchargers on these cars by swapping smaller-diameter drive pulleys to increase boost – It’s a good bet that some dealer service departments may see this as a reason to void this extended warranty coverage, depending on just how mod-friendly management happens to be.

If your CTS-V or ZL1 is exhibiting symptoms of bearing contamination, contact your friendly neighborhood Chevy or Cadillac dealership and give them your VIN to determine eligibility for this no-cost repair.