Chevrolet Astro 1999–2005 — technical service bulletin
Bulletin 990421005 · NHTSA communication 10000081 · issued Dec 1, 2005
Technical service bulletin
communication type
Power Train
component
1999–2005
model years
17
vehicle entries
Official summary
Transfer case shudder. *tt
Vehicles covered
- 1999 Chevrolet Astro
- 2000 Chevrolet Astro
- 2001 Chevrolet Astro
- 2002 Chevrolet Astro
- 2003 Chevrolet Astro
- 2004 Chevrolet Astro
- 2005 Chevrolet Astro
- 1999 GMC Safari
- 2000 GMC Safari
- 2001 GMC Safari
- 2002 GMC Safari
- 2003 GMC Safari
- 2004 GMC Safari
- 2005 GMC Safari
- 1999 Oldsmobile Bravada
- 2000 Oldsmobile Bravada
- 2001 Oldsmobile Bravada
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.