Chevrolet Silverado 2003–2005 — technical service bulletin
Bulletin 0502118002 · NHTSA communication 10017450 · issued Feb 1, 2005
Technical service bulletin
communication type
Steering
component
2003–2005
model years
12
vehicle entries
Official summary
Diagnostic trouble code c0455, service rear wheel steering, system jumps from 4-wheel steer to 2-wheel steer. *tt
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.