- 2004–2005 Factory-verified
The 2004 and 2005 lists print GFO (letter O); GM prints GF0 in its other lists.
GM Heritage factory kit — 2004 Chevrolet Impala, p.29.GM Heritage factory kit — 2005 Chevrolet Impala, p.24.
GF0 Factory-verified
Also documented for Cadillac
Documented applications
- 2004–2007 Factory-verified
GM prints GFO (letter O) in the 2004-2007 lists; GF0 in GM's other lists.
This page aggregates every documented appearance of GF0 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.