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Service bulletin 4070

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 id10023995
Published by NHTSA2008-02-28
Manufacturer's number4070
Manufacturer's date2007-12-01
Replaces4070A
NHTSA componentPOWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE)

NHTSA's summary

TRANSFER CASE FRONT INPUT SHAFT SEAL IS POPPED OUT. EQUIPPED WITH (AWD). *NJ

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

Transmission and driveline, Transfer case

Vehicles listed
CHEVROLET EXPRESS2003, 2004, 2005, 2006
CHEVROLET EXPRESS2008
CHEVROLET EXPRESS 15002007 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET EXPRESS 25002007 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET EXPRESS 35002007 (the catalog's model; the bulletin names a series or trim of it)
GMC SAVANA2003, 2004, 2005, 2006
GMC SAVANA2008
GMC SAVANA 15002007 (the catalog's model; the bulletin names a series or trim of it)
GMC SAVANA 25002007 (the catalog's model; the bulletin names a series or trim of it)
GMC SAVANA 35002007 (the catalog's model; the bulletin names a series or trim of it)

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

Recalls for the same vehicles and component
08V3400002008-07-28. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE)

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
060089026N2018-06-04. Service bulletin. This warranty bulletin provides labor operation numbers for customer concerns that cant be duplicated.