2003 Cadillac CTS: check engine light

6 of the 313 complaints about the 2003 Cadillac CTS describe check engine light.

owner complaints: 6
of this car's complaints: 2%
typical mileage: 38,572
recalls: 0

Is there a fix? 68 service bulletins cover this area of the car. See below

Check engine light by model year

2019
2
2017
2
2015
2
2014
2
2013
2
2012
2
2011
1
2010
3
2009
29
2008
14
2007
7
2006
6
2005
7
2004
3
2003
6

What owners say

Filed Oct 1, 2014 · Brakes, Driver assistance · 104,000 miles · MA

Tl* the contact owns a 2003 cadillac cts. While driving approximately 70 MPH, the steering wheel became difficult to maneuver and the engine stalled. The driver side door latch became inoperable, and the brake, check engine, and traction control indicators illuminated. The contact waited for a few minutes and the vehicle restarted. The failure occurred multiple times. The vehicle was taken to an independent mechanic, but the cause of the failures could not be diagnosed. The vehicle was not repaired. The manufacturer was notified. The approximate failure mileage was 104,000.

Filed Jul 7, 2011 · Engine · 31,000 miles · PA

Under 33,000 miles on this car. While driving down a hill I heard a loud clank noise. Car lost all steering and brake power completely locked up. Had towed to shop and they said timing chain is broken and passenger side of engine is locked up with bent valves. No warning what so ever. Check engine light never came on. Now this car needs a new engine.

Filed Feb 15, 2011 · 38,572 miles · DC

After driving for a short time at slow speed, car will shut off going up a hill. Car starts right back up and run for a while but shuts off again while sitting still. At sometime, after this initial event engine light is on, but intermittently. Car driven to dealership. Ckp and cmp sensors found defective.

Filed Aug 12, 2005 · Engine, Transmission · 20,170 miles · MA

Dt: vehicle lost power when the consumer hit the brakes. The transmission jolts and then the engine shuts off. It has been to the dealer 6 times since january. The dealer tried something different every time she took it in. Manufacturer said she could have a new vehicle if she paid for it. She wanted to get rid of the vehicle.*ak the check engine light illuminated.

Filed Nov 28, 2004 · Transmission · 72,300 miles · TX

Noticed a high-pitched whine coming from rear at 50000 miles. Stopped by the dealership, the service manager drove the vehicle and stated it was the tires causing the noise. Continued to drive the vehicle, sound became more pronounced. A check engine light appeared, so needed to service the car. This repair was unrelated to the whine, an emission control valve had failed. While at the dealership requested they check, again, the whine from the rear. Was notified that indeed it was the differential that needed replacing. Have not taken possession of the vehicle, but am concerned about driving it now. Much concerned about the reliability of the vehicle.

Filed Oct 27, 2004 · Electrical, Engine · 27,772 miles · TX

(1) flickering display lights; buzzing when turn signal engaged; battery died after 30,000 mile maintenance; eight [8] consecutive times of "engine hot--AC turned off" on dic--last time with check engine light on display.