GU6 ✓ Factory-verified

Pontiac · Regular Production Option

Axle, rear, 3.42 ratio

Years 1990–92, 1998–02 Models 2 Factory citations 3

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Also documented for BuickCadillacChevroletGMCOldsmobile

Documented applications

Firebird — Third generation (1982–1992) →

• 1990–1992 ◑ Single-source

  Firebird years: 3rdgenformula option pages 1990–1992

Firebird — Fourth generation (1993–2002) →

• 1998–2002 ✓ Factory-verified

  shared F-body code; Chevrolet Camaro kit

  ⛭ GM factory document — 1998 pontiac firebird rpo code list, p.1.

  ⛭ GM factory document — 2002 pontiac firebird rpo code list, p.1.

  ⛭ GM Heritage factory kit — 1998 Chevrolet Camaro, p.73.

This page aggregates every documented appearance of GU6 in the Pontiac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.