Delivery: fuel pump
Risk. If the flange melts, a hole may be created allowing the fuel pump to leak fuel, causing the vehicle to stall, increasing the risk of a vehicle crash.
NHTSA has logged 139 owner complaints about the 2006 Cadillac STS, most often about the air bags. It is covered by 4 safety recalls, and for recall 14V-542 the manufacturer reports only 51% of affected cars repaired.

Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through December 19, 2023. Updated daily. Photo: No machine-readable author provided. Sfoskett~commonswiki assumed (based on copyright claims)., CC BY-SA 3.0.
139 complaints grouped by the system owners reported.
| System | Complaints | Crash, fire or injury |
|---|---|---|
| Air bags | 57 | 15 |
| Electrical system | 21 | 4 |
| Engine | 20 | 4 |
| Fuel/propulsion system | 18 | 3 |
| Power train | 13 | 1 |
| Engine and engine cooling | 8 | 2 |
| Electronic stability control (ESC) | 8 | 1 |
| Seats | 6 | 1 |
| Vehicle speed control | 6 | 1 |
| 14 other systems | 31 | 9 |
Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.
Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.
Risk. If the flange melts, a hole may be created allowing the fuel pump to leak fuel, causing the vehicle to stall, increasing the risk of a vehicle crash.
Risk. A REAR DIFFERENTIAL FAILURE MAY CAUSE LOSS OF MOTIVE POWER AND POSSIBLY LOSS OF CONTROL INCREASING THE RISK OF A CRASH.
Risk. IF THE ENGINE STOPS RUNNING, THE OPERATOR WILL NOT BE ABLE TO RESTART THE VEHICLE WHICH COULD INCREASE THE RISK OF A CRASH.
Risk. WITHOUT THESE FUNCTIONS ENABLED, A PERSISTENT ECM FAILURE COULD RESULT IN A THROTTLE OPENING GREATER THAN COMMANDED BY THE DRIVER AND A CRASH COULD OCCUR.
Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with Cadillac.
70kmiles, median
Based on the odometer reading in 49 air bags complaints. 76% were reported before 100,000 miles.
Dollar amounts owners wrote in their complaints when describing a repair or a quote. These are not price estimates; a system is shown only when at least 8 owners mentioned a cost.
$950median
If a problem is covered by a recall, the dealer fixes it for free. Some manufacturers also reimburse owners who paid for a repair before a recall was announced.
Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the STS median. How we score
2006 Cadillac STS 4-DR w/SAB in NHTSA's New Car Assessment Program. Photos are from NHTSA's crash tests.
Federal investigations that included the 2006 Cadillac STS, and the recalls they led to.
Recent air bags complaints filed with NHTSA, shortened. Personal details are removed.
I UNDERSTAND THAT 2006 CADILLAC CTS HAS A RECALL FOR AIRBAG PROBLEMS. CADILLAC DOESN'T DENY THAT THE SAME SYSTEM WAS USED IN THE STS. I'VE SEEN SEVERAL COMPLAINTS ABOUT THE SAME PROBLEM. I JUST WONDER WHY THE STS WAS NOT RECALLED. I KNEW THERE WAS NO WARRANTY, AND THAT'S WHY I CONTACTED CADILLAC.…
TL* THE CONTACT OWNS A 2006 CADILLAC STS. THE CONTACT STATED THAT THE AIR BAG WARNING INDICATOR ILLUMINATED AND REMAINED LIT. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC, BUT THE CAUSE OF THE FAILURE COULD NOT BE DIAGNOSED. THE DEALER WAS NOT CONTACTED. THE MANUFACTURER WAS CONTACTED AND…
TL* THE CONTACT OWNS A 2006 CADILLAC STS. THE CONTACT STATED THAT THE PASSENGER SIDE AIR BAG WARNING INDICATOR ILLUMINATED INTERMITTENTLY. THE DEALER AND MANUFACTURER WERE NOT NOTIFIED. THE FAILURE MILEAGE WAS APPROXIMATELY 100,000.
Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.