This bulletin applies to 2016-2017 Cadillac ATS-V and 2015-2017 CTS-V vehicles equipped with an LF3, LF4, LT1 or LT4 engine. If performing a service that requires the half-shaft bolts to be removed or replaced, only newly offered longer bolts and lock washers are required.
Hot LT Engine
This bulletin applies to 2016-2019 Cadillac CTS-V and 2015-2019 Escalade vehicles equipped with a 6.2L LT4 or L86 engine. A vehicle may have a concern of the engine running hot and/or has a tick noise from the thermostat.