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Service bulletin 13421

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 id10246806
Published by NHTSA2023-12-11
Manufacturer's number13421
Manufacturer's date2014-05-01
NHTSA componentFUEL SYSTEM, DIESEL; FUEL SYSTEM, GASOLINE

NHTSA's summary

Fuel Transfer Pump Recall - Various Serviced Vehicles Equipped with 6.6L Diesel Engine (LML/LGH) and Dual Fuel Tanks (N2N)

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Fuel system

Vehicles listed
CHEVROLET U VAN
GMC S PICKUP

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