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June 25, 2015 Service bulletin

This technical bulletin provides repair information to correct customer concerns of loss of high speed...

Chevrolet technical service bulletin 08-07-30-021H for 2007-2011 Chevrolet Silverado 1500, 2007-2014 Chevrolet Tahoe and 2014 GMC Sierra 1500 and others.

Bulletin number
08-07-30-021H
Component
Equipment: other: owners/service/other manual
Summary
This technical bulletin provides repair information to correct customer concerns of loss of high speed GMLAN communications, intermittent no crank, IP gauge fluctuation, intermittent door lock cycling /chime operation, various IP warning lamps illuminated, transmission may not shift, communication DTCs U0073, U0100, U0101, U0102, U0109, U0121 or U0140 set.

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