- 1986–1987 Single-source
years from the OSG; the rparts list agrees
NK4 Factory-verified
Also described as Steering wheel, leather wrapped, 4 spokeSteering wheel, sport leather, with controls
Also documented for BuickCadillacChevroletOldsmobileSaturn
Documented applications
- 2008–2009 Factory-verified
- 1998–2005 Factory-verified
the 1998–1999 lists include a leather shifter knob and require UK3
- 2005–2006 Factory-verified
- 2009 Factory-verified
This page aggregates every documented appearance of NK4 in the Pontiac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.