- 2005 Factory-verified
only in: EXT; the kit prints it as the PDU discount-not-desired code; the service lists do not print it
GM Heritage factory kit — 2005 Chevrolet Trailblazer, p.158.
R7C Factory-verified
Documented applications
This page aggregates every documented appearance of R7C in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.