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Service bulletin 9311

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 id39453
Published by NHTSA1995-11-01
Manufacturer's number9311
Manufacturer's date1993-12-01
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:GASOLINE

NHTSA's summary

L10 STC ENGINES BUILT PRIOR TO 05 APRIL 1993 AND WITH CPL BETWEEN 1558 AND 1562 MAY PRODUCE AN UNACCEPTABLE LEVEL OF WHITE SMOKE WHEN THE ENGINE IS OPERATED AT NO-LOAD HIGH RPM, OR LIGHT LOAD OPERATION. *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

Engine

Vehicles listed
CUMMINS CUMMINS

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