2003 Cadillac CTS power train problems
25 owner complaints filed with NHTSA name the power train on the 2003 Cadillac CTS — 8% of all complaints for this model year.
What owners report
“Tl* the contact owns a 2003 cadillac cts. The contact stated that the transmission assembly made an abnormal sound and the gears slipped without warning. Martin buick gmc (12101 w olympic blvd, los angeles, ca 90064, (310) 622-9334) was unable to provide a permanent remedy; therefore, the failure…”
filed Apr 29, 2019
“The pcv valve system design is defective. On (4) occasions the pressure build-up causing massive oil leaks at the valve cover. I experienced smoke from the engine compartment as oil leaked onto a hot engine. A potential engine fire. It took years for the cadillac dealers to correct the problem…”
filed Feb 15, 2015
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities. The damage is being caused either in the removal process by the technician, or inadequate packaging or shipping. This…
24-NA-141 · Service Bulletin/Repair Instructions · issued Jul 24, 2024
Power Train problems in other CTS years
| Year | Reports | Share |
|---|---|---|
| 2017 CTS | 9 | 35% |
| 2016 CTS | 9 | 29% |
| 2015 CTS | 19 | 41% |
| 2014 CTS | 84 | 58% |
| 2013 CTS | 13 | 18% |
| 2012 CTS | 4 | 6% |
| 2011 CTS | 22 | 22% |
| 2010 CTS | 9 | 13% |
| 2009 CTS | 28 | 17% |
| 2008 CTS | 21 | 12% |
| 2007 CTS | 33 | 15% |
| 2006 CTS | 45 | 17% |
Other reported problem areas on the 2003 Cadillac CTS
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.