Chevrolet Avalanche 2007–2008 — technical service bulletin
Bulletin PIP4101B · NHTSA communication 10114928 · issued Oct 28, 2015
Technical service bulletin
communication type
Power Train
component
2007–2008
model years
15
vehicle entries
Official summary
This Preliminary Information communication provides information to the technician about vehicles that have a Service 4WD light on and the system inoperative. Technician may find Diagnostic Trouble Code B2725 set. Technician will need to replace the transfer case dash switch.
Vehicles covered
- 2008 Chevrolet Avalanche
- 2007 Chevrolet Silverado 1500
- 2008 Chevrolet Silverado 1500
- 2007 Chevrolet Silverado 2500
- 2008 Chevrolet Silverado 2500
- 2008 Chevrolet Suburban
- 2008 Chevrolet Tahoe
- 2007 GMC Sierra 2500
- 2008 GMC Sierra 2500
- 2007 GMC Sierra Denali
- 2008 GMC Sierra Denali
- 2008 GMC Yukon
- 2008 GMC Yukon Denali
- 2008 GMC Yukon Denali XL
- 2008 GMC Yukon XL
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.