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# PI-0524-A.
Affected Component: ENGINE AND ENGINE COOLING:ENGINE
PONTIAC/CHEVROLET: SOME MODEL YEAR VEHICLES MAY EXPERIENCE, AFTER A COLD START, A NON INCREASE IN ENGINE POWER, INTERMITTENTLY, WHEN ACCELERATING TO HIGHWAY SPEEDS. *PE
