- 1998–2000 Factory-verified
the 1999–2000 lists print "Colth"
13C Factory-verified
Also documented for CadillacGMCPontiac
Documented applications
- 2009 Factory-verified
GM marks it "(C)".
- 1998–1999 Factory-verified
GM prints "Colth"
This page aggregates every documented appearance of 13C in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.