2003 Cadillac Sts problems

General information about Cadillac-Sts
Overview of popular issues

The Cadillac STS (Seville Touring Sedan) is a mid-sized luxury 4-door sedan manufactured and marketed by General Motors from 2004 to 2011 for the 2005 to 2011 model years. A version of the STS was marketed in China as the SLS through 2013.

It was equipped with a six-speed automatic transmission with performance algorithm shifting and driver shift control.

Origins

The STS was the successor to the Cadillac Seville, which beginning in 1987 was available as an upscale performance-oriented STS (for Seville Touring Sedan) version.

While smaller than the full-size DTS, the more expensive STS was the flagship sedan of the Cadillac brand.

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Common 2003 Cadillac Sts problems

The 2003 Cadillac STS, a luxury sedan, is known for several common problems that owners have reported. These issues can range from minor inconveniences to more serious concerns that may require costly repairs.

Cooling System Issues: The 2003 Cadillac STS can also experience issues with the cooling system, such as leaks in the water pump or radiator. These leaks can lead to overheating and eventually a blown head gasket, which can result in significant repair costs.

Crankshaft Position Sensor: The crankshaft position sensor, which is responsible for monitoring the position and speed of the crankshaft, can fail in the 2003 Cadillac STS. This failure can cause the engine to stall intermittently, and replacing the sensor can cost between $218 and $304.

In general, the 2003 Cadillac STS has a reliability rating of 3.0 out of 5.0, which ranks it 26th out of 32 car brands. The average annual repair cost for a Cadillac is $783, and the Seville model, which the STS replaced, is known for issues with the anti-theft system, the A/C or heater, and the ignition lock cylinder.

It is important to note that while these common problems can be concerning, not every 2003 Cadillac STS will experience these issues. Regular maintenance and timely repairs can help prevent or address these problems, ensuring the longevity and reliability of the vehicle.

Is the Cadillac STS reliable?

The 2006 Cadillac STS receives an average consumer rating of 4.5 overall and a 4.5 for reliability, which means owners consider its reliability to be above average.

What are the common problems on a 2003 Cadillac DeVille?

What does STS mean for Cadillac?

The STS was the successor to the Cadillac Seville, which beginning in 1987 was available as an upscale performance-oriented STS (for Seville Touring Sedan) version. While smaller than the full-size DTS, the more expensive STS was the flagship sedan of the Cadillac brand.

What motor is in a 2003 Cadillac CTS?

3.2 L V62003 Cadillac CTS / Engine

Engine: 3.2-liter V-6, 220 horsepower at 6,000 rpm, 218 pounds-feet of torque at 3,400 rpm. Transmission: Five-speed manual. Wheelbase: 113.4 inches. Curb weight: 3,509 pounds.

Is the Cadillac STS reliable?

The 2006 Cadillac STS receives an average consumer rating of 4.5 overall and a 4.5 for reliability, which means owners consider its reliability to be above average.

What are the common problems on a 2003 Cadillac DeVille?

What does STS mean for Cadillac?

What year did they stop making the Cadillac STS?

At the heart of Cadillac STS (discontinued in 2011) performance was an advanced 302-hp direct injection V6 engine and Hydra-Matic 6-speed automatic transmission with Driver Shift Control, which allowed manual shifting without the use of a clutch pedal.

2003 Cadillac Sts complaints

The NHTSA has received 0 complaints about various vehicle components related to the 2003 Cadillac Sts.

You can leave your car complaint via the special form below.

Additional sources

More sources of information about 2003 Cadillac Sts problems:

Common Problems with '03 CTS? | Cadillac Owners Forum

https://www.cadillacforums.com/threads/common-problems-with-03-cts.193893/

Mar 5, 2010 ... A common problem for Cadillacs, and many other cars at that, is their reputation for getting a dirty throttle body due to carbon buildup. Dirty ...

2003 Cadillac Seville Problems and Complaints - 79 Issues

https://repairpal.com/2003-cadillac-seville/problems

Problem with your 2003 Cadillac Seville? Our list of 79 known complaints reported by owners can help you fix your 2003 Cadillac Seville.

2003 SLS # of problems | Cadillac Owners Forum

https://www.cadillacforums.com/threads/2003-sls-of-problems.956306/

Apr 13, 2017 ... Hi, Just interested in knowing what Seville owners are doing when the cost of repairs out way the value of the car. Need reseal of engine ...

99-04 Cadillac Seville STS thoughts? | Bob Is The Oil Guy

https://bobistheoilguy.com/forums/threads/99-04-cadillac-seville-sts-thoughts.162456/

Oct 3, 2011 ... I actually think they look very nice, but have heard a mixed bag of reliability. I know they can burn oil, I know they need to have coolant ...