Service bulletins for the 2003 Cadillac Deville
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
477 on file from NHTSA, as of 2026-10-19.
About P0503 on the 2003 Cadillac Deville: what the code means, and the bulletins and recalls about the same components.
By type
By component
By trouble code
Only bulletins with trouble code: P0503 are shown. Show all
| 11272002 | 2004-08-10. Service bulletin. ELECTRICAL SYSTEM. AUTO TRANSMISSION DIAGNOSTIC TROUBLE CODE P0503, VEHICLE SPEED SENSOR CIRCUIT INTERMITTENT. *TT |
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| 011403 | 2004-01-30. Service bulletin. ELECTRICAL SYSTEM. DIAGNOSTIC TROUBLE CODE P0503, VEHICLE SPEED SENSOR CIRCUIT INTERMITTENT. CUSTOMER MAY DESCRIBE THE CONDITION AS THE SPEEDOMETER INTERMITTENTLY GOES TO ZERO, THE VEHICLE MAY JERK AT TIMES, THEY ARE UNABLE TO SET THE CRUISE, THE CRUISE MAY INTERMITTENTLY DROPOUT. GM VOICEMAIL EXPRESS. *TT |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.