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# PIC-5350A.
GM: GAUGES AND WARNING LIGHTS ARE INTERMITTENTLY ILLUMINATED. THERE COULD BE FIVE INTERNAL TROUBLE CODES AND IS LIKELY RELATED TO AN ELECTRICAL HARNESS. *RM