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-5149.
Affected Component: SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM
CHEVROLET: AFTER INSTALLATION OF THE OHB BRAKE KIT PER TSB 09-05-22-001A, A CHECK ENGINE LIGHT WILL BE ON AND DTC P258B WILL BE SET. FOLLOWING ESI DIAGNOSTICS MAY LEAD DEALERS TO TRY REPROGRAMMING THE ECM OR EBCM AND ALSO REPLACE THE VACUUM PUMP. *PE
