Chevrolet Express 2003–2008 — technical service bulletin
Bulletin 4070 · NHTSA communication 10023995 · issued Dec 1, 2007
Technical service bulletin
communication type
Power Train
component
2003–2008
model years
16
vehicle entries
Official summary
Transfer case front input shaft seal is popped out. Equipped with (awd). *nj
Vehicles covered
- 2003 Chevrolet Express
- 2004 Chevrolet Express
- 2005 Chevrolet Express
- 2006 Chevrolet Express
- 2008 Chevrolet Express
- 2007 Chevrolet Express 1500
- 2007 Chevrolet Express 2500
- 2007 Chevrolet Express 3500
- 2003 GMC Savana
- 2004 GMC Savana
- 2005 GMC Savana
- 2006 GMC Savana
- 2008 GMC Savana
- 2007 GMC Savana 1500
- 2007 GMC Savana 2500
- 2007 GMC Savana 3500
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.