- 1999–2001, 2003–2007 Factory-verified
2005–2007: heavy-duty models only (GM’s HD list)
GM Heritage factory kit — 2001 Chevrolet Silverado, p.56.GM Heritage factory kit — 2007 Chevrolet Silverado, p.60.
M1F Factory-verified
Also described as Power take-off, rear
Also documented for GMC
Documented applications
- 2001–2007 Factory-verified
years from Heritage kit pages, not in GM’s service list of that year: 2002 (kit list)
GM Heritage factory kit — 2001 Chevrolet Silverado HD, p.62.GM Heritage factory kit — 2002 Chevrolet Silverado HD, p.41.
- 2007–2008 Factory-verified
This page aggregates every documented appearance of M1F in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.