Sorry, the NHTSA has not posted this TSB document yet.
You can still get the detailed info from Chevrolet for this TSB. Call your local Chevrolet dealer's service department & ask for a copy of TSB# 000604009.
Affected Component: VEHICLE SPEED CONTROL:CRUISE CONTROL
SOME CUSTOMES MAY COMMENT ON A ROUGH ENGINE IDLE AND / OR MISFIRE. THE CHECK ENGINE LIGHT MAY OR MAY NOT BE ILLUMINATED AND DIAGNOSTIC TROUBLE CODE P0300 MAY OR MAY NOT BE SET UNDER ROUGHT IDLE CONDITIONS. *TT