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Service bulletin 776509

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id52583
Published by NHTSA1997-08-21
Manufacturer's number776509
Manufacturer's date1997-03-01
NHTSA componentELECTRICAL SYSTEM:IGNITION:MODULE

NHTSA's summary

DTC P0400 SET (INSTALL FLASH CALIBRATION). *TW

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Electrical system, Ignition

Trouble codes named

P0400

Vehicles listed
CADILLAC FLEETWOOD1996

Listing a model year does not mean every vehicle of it is concerned: the document says which.