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# 15-NA-078.
Front Tire Front Air Deflector Fastener Length Differences
When performing a PDI, or if removing the left front tire front air deflector or the front bumper fascia center
air deflector, the incorrect length screw may have been provided for installation.
If a longer screw is installed in the incorrect position of the left front tire front air deflector, the longer screw
may come in contact with the battery coolant hose.