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# PIT-4935.
Affected Component: SERVICE BRAKES, HYDRAULIC:POWER ASSIST:HYDRAULIC
CHEVROLET/GMC: BRAKE ASSIST PUMP MOTOR ON AND WARNING LIGHT/CHIME. OWNERS MAY COMMENT WHEN TURNING THE STEERING WHEEL WITH THE BRAKE APPLIED THAT THE HYDRAULIC BRAKE ASSIST PUMP TURNS ON AND THE BRAKE WARNING LAMP AND CHIME MAY SOUND. MODELS CHEVROLET KODIAK, C4500-C7500, CONVENTIONAL CAB, T SERIES, TILT CAB, C6500-C7500; GMC TOPKICK, C4500-C7500, CONVENTIONAL CAB, T SERIES, TILT CAB, T6500-T7500. *PE
