Pontiac Firebird (USA / CAN)

Differential fluid capacity & service interval

Pontiac Firebird (USA / CAN) differential fluid capacity is 1,7 liters. Service intervals include checking every 12500 km or 12 months and changing every 12500 km. The data covers 6 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
  • Firebird 3.4 (1994-1995)
  • Rear
  • Use: Normal
  • Capacity 1,7 liter
  • Check 12500 km/ 12 months
  • Firebird 3.4 (1994-1995)
  • Rear
  • Use: Severe
  • Capacity 1,7 liter
  • Change 12500 km
  • Firebird 3.4 (1994-1995)
  • Rear, limited slip
  • Use: Normal
  • Capacity 1,7 liter
  • Check 12500 km/ 12 months
  • Firebird 3.4 (1994-1995)
  • Rear, limited slip
  • Use: Severe
  • Capacity 1,7 liter
  • Change 12500 km
  • Firebird 5.7, Trans Am (1994-1997)
  • Rear
  • Use: Normal
  • Capacity 1,7 liter
  • Check 12500 km/ 12 months
  • Firebird 5.7, Trans Am (1994-1997)
  • Rear, limited slip
  • Use: Normal
  • Capacity 1,7 liter
  • Check 12500 km/ 12 months

Additional Notes

  • The rear differential capacity across all listed Pontiac Firebird configurations — the 3.4-liter (1994-1995) and the 5.7-liter Trans Am (1994-1997) — is 1.7 liters, applying equally to both standard and limited-slip rear differential variants.
  • A 1.7-liter differential capacity is a relatively modest fill volume, consistent with a compact rear axle housing typical of rear-wheel-drive performance cars of the era, rather than a larger truck-type differential that might hold 2 liters or more.
  • Under normal use conditions, the 3.4-liter Firebird (1994-1995) rear differential — both standard and limited-slip — calls for a check interval of every 12,500 km or 12 months, whichever comes first, rather than a full fluid change.
  • Under severe use conditions, the 3.4-liter Firebird (1994-1995) rear differential interval shifts from a check to an outright fluid change at 12,500 km, reflecting the greater stress placed on differential fluid under demanding operating conditions.
  • The 5.7-liter Trans Am (1994-1997) rear differential specifications list only a normal use condition, with a check interval of 12,500 km or 12 months for both the standard and limited-slip rear differential variants.
  • The limited-slip rear differential on the 3.4-liter Firebird (1994-1995) carries the same 1.7-liter capacity and identical service intervals as the standard rear differential, meaning the limited-slip designation does not alter the volume or timing specifications in the data provided.
  • The 3.4-liter engine variant spans only 1994-1995, while the 5.7-liter Trans Am configuration covers 1994-1997, representing a longer production window within the same generational body structure.

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