The vehicle stalls sometimes when standing at a light or while driving the vehicle at various speeds & sometimes into a turn without warning, this incident occurred numerous times. The vehicle has not been to the dealership to be inspected. The manufacturer has not been alerted.
The worst 2003 Cadillac STS problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Electrical3
- Engine3
- Brakes2
- Driver assistance1
- Fuel system1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Electrical3
- Engine3
- Brakes2
- Driver assistance1
- Fuel system1
- Lights1
- Steering1
- Suspension1
Recalls
No recalls on record for this model year.
Technical service bulletins for the 2003 Cadillac STS 91
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
- This Preliminary Information communication provides information to the technician about changing the tire...
- Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles
- GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities
- This service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves...
- This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as...
- This service bulletin provides information for dealers/technicians on Service Programming System (SPS)...
- This Warranty Administration bulletin provides retail and wholesale service personnel with the...
- This bulletin provides information for electrical ground repairs using new General Motors replacement...
- This technical bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake...
What 2003 Cadillac STS owners say
Most recent owner complaints, unedited.
Vehicle was idling in driveway during strong electrical storm. Lightning appeared to hit a tree nearby. Simultaneously, several dash warning lights came on and stayed on, including anti-lock brake, traction and stability control warnings. Call was made to insurance company and vehicle towed to cadillac dealership. Service department said cause of the warning light was a bolt near wire to anti-lock brake power control module had worn insulation off, causing failure of power control module.if indeed lightning/power surge did not cause this problem, improperly located bolt or design would seem to be defective.
Car scrapes front end going into or out of driveways even at slow speed 1 to 2 miles an hour. Also hits curb parking stops. My mechanic told me to take it back to the dealer I pruchased it from and the warranty should cover it. The car is approximatly 7-8 inches from the ground and the rear end is about 15-16 inches high off the ground.
Dt*: the contact stated while driving the vehicle at various speeds between 5 to 50 MPH the engine stalled without warning, this incident occurred four times. The vehicle has not been to the dealership to be inspected. The manufacturer has not been alerted. The dealer corrected the problem by replacing the battery and crankshaft sensor. Updated 02/21/06.
On june 30, 2005, I brought my 2003 cadillac seville to crest cadillac in syracuse ny complaining of brake pulsation and rumbling. It was discovered that one disk brake pad had completely separated from its backing plate, and a second set of pad and backing plate was about to separate. I believe this is a safety issue because I think it compromises the braking system of the car. The car only has 12,350 miles on it.
While driving vehicle would stall.
While driving the bolt came out of the steering column. *nlm there were engine problems/stalling, air bag light had come on, the radio cuts on by itself, horn was inoperative, engine light would come on, and steering wheel locked up. Recall #0311500 in re: cadillac cts. Scc
The headlight lenses were dim, which caused less light.
Compare the 2003 Cadillac STS
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Questions about the 2003 Cadillac STS
Is the 2003 Cadillac STS reliable?
Owners have filed 8 complaints about the 2003 Cadillac STS, fewer than a typical STS model year.
What is the 2003 Cadillac STS year score?
The 2003 Cadillac STS scores 82 out of 100 (good). The score compares it with the other model years of the Cadillac STS: 75 is a typical year, 50 means twice the usual complaints, and serious complaints and recalls lower it.
What is the most common problem with the 2003 Cadillac STS?
Electrical system, with 3 complaints. Next is engine (3).
How many recalls does the 2003 Cadillac STS have?
No recalls on record.
What year does the Cadillac STS have the most electrical problems?
The Cadillac STS model years with the most electrical complaints are 2005 (23 complaints), 2006 (21 complaints) and 2007 (11 complaints).
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