C28 ✓ Factory-verified

Pontiac · Regular Production Option

Pump, coolant, auxiliary

Years 2000 Models 1 Factory citations 1

Query this via API →

Also documented for ChevroletOldsmobile

Documented applications

Montana — U-body second generation (1997–2005) →

• 2000 ✓ Factory-verified

  the list prints "Auxillary"

  ⛭ GM factory document — 2000 pontiac montana ext rpo code list, p.1.

This page aggregates every documented appearance of C28 in the Pontiac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.