Chevrolet Silverado 2005 — technical service bulletin
Bulletin 3250 · NHTSA communication 10011595 · issued Jan 27, 2005
Technical service bulletin
communication type
Service Brakes, Air
component
2005
model years
2
vehicle entries
Official summary
Service engine soon light illuminated with diagnostic trouble code p0171 or p0174 set. The root cause may be a damaged or missing seal from the master cylinder to the brake booster. *eh
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.