TSBs

Curing the Cadillac Turbo Rattle

April 26, 2022

2014-2016 Cadillac CTS-V Sport and XTS vehicles equipped with an LF3 twin turbocharged engine may experience a rattle noise during cold startup and idle, with the noise coming from the turbocharger.

Information courtesy of Mitchell 1,

Mike Mavrigian

2014-2016 Cadillac CTS-V Sport and XTS vehicles equipped with an LF3 twin turbocharged engine may experience a rattle noise during cold startup and idle, with the noise coming from the turbocharger.

A revised part is available to address this concern. The new part has a revised spring for the wastegate to limit movement when cold. The P/N is 12666538 (LH turbo) and 12666530 (right hand turbo) for the CTS-V and 12666540 (both RH and LH turbos) 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.