Hummer H2 2003–2007 — technical service bulletin
Bulletin 060421001 · NHTSA communication 10020840 · issued May 1, 2006
Technical service bulletin
communication type
Electrical System
component
2003–2007
model years
10
vehicle entries
Official summary
Updated transfer case connector service kit now available for transfer case speed sensor wire harness connector that comes loose or connector retainer clip breaks. 2007 and prior gm light duty trucks. *kb
Vehicles covered
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.