- 2001 Factory-verified
in GM's shared truck and utility list only; no source ties it to the Sierra pickup
G69 Factory-verified
Also described as Level control, automatic air, heavy-duty
Also documented for CadillacChevrolet
Documented applications
- 2001–2006 Factory-verified
- 2007–2009 Factory-verified
This page aggregates every documented appearance of G69 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.