- 2005 Factory-verified
only the 2005 lists print this code, with C6F's wording; C6F is absent from those lists, so it may be a misprint of C6F.
C8F Factory-verified
Also documented for GMC
Documented applications
This page aggregates every documented appearance of C8F in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.