TSBs

Cadillac Turbocharged Engine Rattles

Oct. 18, 2022

This bulletin applies to 2014-2016 Cadillac CTS-V Sport and XTS vehicles equipped with the LF3 Twin Turbocharged engine. A rattle noise at the turbocharger may be evident when cold, at idle. There is a revised part available for this concern.

Information courtesy of Mitchell 1,

Mike Mavrigian

The new part has a revised spring for the wastegate to limit movement when cold. The new part numbers are 12666538 (LH) and 12666539 (RH) for CTS-V Sport and 12666540 (both RH and LH) for the XTS.

About the Author

Information courtesy of Mitchell 1

Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.

About the Author

Mike Mavrigian | Motor Age Editor

Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.