VG1 ✓ Factory-verified

GMC · Regular Production Option

Protector, underhood compound, corrosion preventive, water based, clear

Years 1999, 2007–09 Models 3 Factory citations 5

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Also described as Underhood corrosion protection for overseas shipment

Also documented for BuickCadillacChevroletOldsmobilePontiacSaturn

Documented applications

Acadia — first generation, Lambda (2007–2017) →

• 2007–2009 ✓ Factory-verified internal
  ⛭ GM factory document — 2007 gmc acadia 2wd rpo code list, p.1.

  ⛭ GM factory document — 2008 gmc acadia 2wd rpo code list, p.1.

  ⛭ GM factory document — 2009 gmc acadia 2wd rpo code list, p.1.

Sierra — GMT800 (1999–2007) →

• 1999 ✓ Factory-verified internal
  ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1.

Yukon — GMT900 (2007–2014) →

• 2009 ✓ Factory-verified internal
  ⛭ GM factory document — 2009 gmc yukon 2wd rpo code list, p.1.

This page aggregates every documented appearance of VG1 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.