Electrical System Related Problems of the 2003 Cadillac STS

Table 1 shows three common electrical system related problems of the 2003 Cadillac STS.

Table 1. Electrical System related problems of Cadillac STS

Problem Category Number of Problems
Electrical System problems
Crankshaft Position Sensor problems
Horn Assembly problems
Electrical System problem #1

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.

Crankshaft Position Sensor problem #2

: 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.

Horn Assembly problem #3

While driving the bolt came out of the steering column. 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 Cadillac cts. Scc.

  Electrical System related problems in other Cadillac STS model year vehicles:

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Safety Ratings of STS Cars
Fuel Economy of STS Vehicles
STS Service Bulletins
STS Safety Recalls
STS Defect Investigations