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# PI1086A.
Shifter Handle Knob Cracked and/or Will Not Operate While Shifting Out of Park
Some customers may comment on the shifter handle knob being cracked and/or will not operate while
shifting out of Park. This condition may occur if the chrome knob on the shifter handle cracks, not allowing the shifter to engage into gear.