Chevrolet Astro 2005–2006 — technical service bulletin
Bulletin 3309 · NHTSA communication 10013548 · issued Apr 21, 2005
Technical service bulletin
communication type
Power Train
component
2005–2006
model years
30
vehicle entries
Official summary
Investigation of extension seal leaks on 4l60e automatic transmission. *tt
Vehicles covered
- 2005 Chevrolet Astro
- 2005 Chevrolet Avalanche
- 2006 Chevrolet Avalanche
- 2005 Chevrolet Colorado
- 2006 Chevrolet Colorado
- 2005 Chevrolet Express
- 2006 Chevrolet Express
- 2005 Chevrolet Silverado
- 2006 Chevrolet Silverado
- 2005 Chevrolet SSR
- 2006 Chevrolet SSR
- 2005 Chevrolet Suburban
- 2006 Chevrolet Suburban
- 2005 Chevrolet Tahoe
- 2006 Chevrolet Tahoe
- 2005 Chevrolet Trailblazer
- 2006 Chevrolet Trailblazer
- 2005 GMC Canyon
- 2006 GMC Canyon
- 2005 GMC Envoy
- 2006 GMC Envoy
- 2005 GMC Safari
- 2005 GMC Savana
- 2006 GMC Savana
- 2005 GMC Sierra
- 2006 GMC Sierra
- 2005 GMC Yukon
- 2006 GMC Yukon
- 2005 GMC Yukon XL
- 2006 Pontiac Gto
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.