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Service bulletin 9633D

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 id52391
Published by NHTSA1997-07-24
Manufacturer's number9633D
Manufacturer's date1997-04-11
Replaces9633-C
NHTSA componentELECTRICAL SYSTEM:IGNITION

NHTSA's summary

A HIGH FAILURE RATE HAS BEEN EXPERIENCED WITH REMOTE MOUNT SHUTDOWN SOLENOID OPTION FV9103 ON BLUE BIRD TC1000 AND TC2000 BUSSES POWERED WITH B AND C SERIES ENGINES. *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

Vehicles listed
BLUE BIRD TC2000

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