NP8 ✓ Factory-verified

Buick · Regular Production Option

Transfer case, active, two speed, push button control

Years 2004–07 Models 1 Factory citations 2

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Also documented for CadillacChevroletGMCOldsmobile

Documented applications

Rainier — GMT360 (2004–2007) →

• 2004–2007 ✓ Factory-verified

  the 2004 lists print "2-Speed" for two speed

  ⛭ GM factory document — 2004 buick rainier 2wd rpo code list, p.1.

  ⛭ GM factory document — 2007 buick rainier rpo code list, p.1.

This page aggregates every documented appearance of NP8 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.