Chevrolet Trailblazer 2002–2009 — technical service bulletin
Bulletin PIT3712A · NHTSA communication 10165862 · issued Sep 3, 2019
Technical service bulletin
communication type
Equipment
component
2002–2009
model years
19
vehicle entries
Official summary
This Preliminary information communicates rear HVAC blower operation and diagnostic.
Vehicles covered
- 2007 Chevrolet Trailblazer
- 2008 Chevrolet Trailblazer
- 2009 Chevrolet Trailblazer
- 2002 Chevrolet Trailblazer Ext
- 2003 Chevrolet Trailblazer Ext
- 2004 Chevrolet Trailblazer Ext
- 2006 Chevrolet Trailblazer Ext
- 2005 Chevrolet Trailblazer Ext 370
- 2005 GMC Envoy
- 2007 GMC Envoy
- 2008 GMC Envoy
- 2009 GMC Envoy
- 2006 GMC Envoy Denali
- 2007 GMC Envoy Denali
- 2002 GMC Envoy XL
- 2003 GMC Envoy XL
- 2004 GMC Envoy XL
- 2006 GMC Envoy XL
- 2005 GMC Envoy XL 370
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.