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Service bulletin 02048

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 id10007734
Published by NHTSA2004-07-09
Manufacturer's number02048
Manufacturer's date2004-01-01
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:DIESEL

NHTSA's summary

LOSS OF OIL FROM AROUND THE OIL DIPSTICK TUBE DURING EXTENSIVE DRIVING IN EXTREME LOW AMBIENT TEMPERATURES. ALL 2003-2004 GMC, CHEVROLET C/T 65-75-85 AND ISUZU F 65-75-85 MEDIUM DUTY TRUCK MODELS EQUIPPED WITH THE 7.8L OPTION GL4 DIESEL ENGINE. *TT

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
UNKNOWN UNKNOWN1

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