Pontiac Bonneville (EU)

Automatic transmission fluid capacity & service interval

Pontiac Bonneville (EU) uses automatic transmission fluid with a capacity range of 7 to 14,2 liters. The service interval is 83000 km. The data covers 3 configurations.

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

TypeSpecifications
Bonneville 4.6 V8 32V (2004-2005)
  • Use: Normal
  • Capacity 14,2 liter
  • Change 83000 km
  • Code: 4/1
Bonneville 3.8 V6 (1999-2005)
  • Use: Normal
  • Capacity 7 liter
  • Change 83000 km
  • Code: 4/1
Bonneville 3.8 V6 Supercharged (1999-2004)
  • Use: Normal
  • Capacity 7 liter
  • Change 83000 km
  • Code: 4/1

Additional Notes

  • The Pontiac Bonneville (EU) automatic transaxle fluid capacity splits into two distinct values across the engine lineup: 7 liters for the 3.8 V6 configurations and 14.2 liters for the 4.6 V8 32V.
  • A transaxle combines the transmission and drive axle differential into a single housing, which means the listed capacity covers fluid shared across both functions rather than a standalone gearbox only.
  • The 4.6 V8 32V (2004-2005) carries a 14.2-liter transaxle capacity, which is more than double the 7-liter figure seen in the V6 variants, reflecting the larger fluid volume required by the unit paired with the V8.
  • The 3.8 V6 (1999-2005) and the 3.8 V6 Supercharged (1999-2004) share an identical 7-liter transaxle capacity, indicating no difference in fluid volume between the naturally aspirated and forced-induction versions of the same engine family.
  • All three configurations carry a change interval of 83,000 km under normal use conditions, meaning the interval applies to standard driving rather than demanding or high-stress operating environments.
  • The 3.8 V6 Supercharged variant covers model years 1999-2004, one year shorter than the standard 3.8 V6 range of 1999-2005, while both share the same 7-liter capacity and 83,000 km interval.
  • The 4.6 V8 32V entered the Bonneville lineup in 2004, making the 2004-2005 period the only years where the 14.2-liter transaxle specification applies within the 1999-2005 range covered here.

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