Chevrolet Avalanche 2500 2002–2008 — technical service bulletin
Bulletin 08-07-30-015 · NHTSA communication 10025462 · issued Apr 1, 2008
Technical service bulletin
communication type
Power Train
component
2002–2008
model years
44
vehicle entries
Official summary
Diagnostic information on mn8, mt1 ses/mil illuminated, dtc p0757, harsh shift, delayed 2-3 shift, 2-3 shift flare, no third gear, slips in third gear or reverse. *pe
Vehicles covered
- 2002 Chevrolet Avalanche 2500
- 2003 Chevrolet Avalanche 2500
- 2004 Chevrolet Avalanche 2500
- 2005 Chevrolet Avalanche 2500
- 2006 Chevrolet Avalanche 2500
- 2007 Chevrolet Avalanche 2500
- 2002 Chevrolet Express
- 2003 Chevrolet Express
- 2004 Chevrolet Express
- 2005 Chevrolet Express
- 2006 Chevrolet Express
- 2007 Chevrolet Express
- 2008 Chevrolet Express
- 2002 Chevrolet Silverado 1500
- 2003 Chevrolet Silverado 1500
- 2004 Chevrolet Silverado 1500
- 2005 Chevrolet Silverado 1500
- 2006 Chevrolet Silverado 1500
- 2007 Chevrolet Silverado 1500
- 2007 Chevrolet Suburban 1500
- 2002 Chevrolet Suburban 2500
- 2003 Chevrolet Suburban 2500
- 2004 Chevrolet Suburban 2500
- 2005 Chevrolet Suburban 2500
- 2006 Chevrolet Suburban 2500
- 2002 GMC Savana
- 2003 GMC Savana
- 2004 GMC Savana
- 2005 GMC Savana
- 2006 GMC Savana
- 2007 GMC Savana
- 2008 GMC Savana
- 2002 GMC Sierra
- 2003 GMC Sierra
- 2004 GMC Sierra
- 2005 GMC Sierra
- 2006 GMC Sierra
- 2007 GMC Sierra
- 2002 GMC Yukon XL 2500
- 2003 GMC Yukon XL 2500
- 2004 GMC Yukon XL 2500
- 2005 GMC Yukon XL 2500
- 2006 GMC Yukon XL 2500
- 2007 GMC Yukon XL 2500
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.