Pontiac Montana (USA / CAN)

Automatic transmission fluid capacity & service interval

Pontiac Montana (USA / CAN) requires automatic transmission fluid with a capacity range of 7 to 9,5 liters. Service intervals consist of 50000 miles and 100000 miles. The data covers 8 configurations.

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

TypeSpecifications
Montana 3.9 SV6 E85 (CAN) (2007-2009)
  • Use: Normal
  • Capacity 7 liter
  • Capacity 8,3 liter (with all wheel drive)
  • Change 100000 miles
  • Code: 4/1
Montana 3.9 SV6 E85 (CAN) (2007-2009)
  • Use: Severe
  • Capacity 7 liter
  • Capacity 8,3 liter (with all wheel drive)
  • Change 50000 miles
  • Code: 4/1
Montana 3.5 SV6 (2005-2006)
  • Use: Normal
  • Capacity 7 liter
  • Capacity 8,3 liter (with all wheel drive)
  • Change 100000 miles
  • Code: 4/1
Montana 3.5 SV6 (2005-2006)
  • Use: Severe
  • Capacity 7 liter
  • Capacity 8,3 liter (with all wheel drive)
  • Change 50000 miles
  • Code: 4/1
Montana 3.9 SV6 (2005-2009)
  • Use: Normal
  • Capacity 7 liter
  • Capacity 8,3 liter (with all wheel drive)
  • Change 100000 miles
  • Code: 4/1
Montana 3.9 SV6 (2005-2009)
  • Use: Severe
  • Capacity 7 liter
  • Capacity 8,3 liter (with all wheel drive)
  • Change 50000 miles
  • Code: 4/1
Montana 3.4 V6 (1997-2005)
  • Use: Normal
  • Capacity 9,5 liter (Dry fill)
  • Capacity 7,5 liter (Service fill)
  • Change 100000 miles
  • Code: 4/1
Montana 3.4 V6 (1997-2005)
  • Use: Severe
  • Capacity 9,5 liter (Dry fill)
  • Capacity 7,5 liter (Service fill)
  • Change 50000 miles
  • Code: 4/1

Additional Notes

  • The Pontiac Montana 3.4 V6 (1997-2005) carries a dry fill capacity of 9.5 liters, which reflects the total fluid volume required when filling a completely drained or rebuilt transmission, including the torque converter and all internal passages.
  • The 3.4 V6 service fill capacity of 7.5 liters is notably lower than the dry fill figure, as a routine fluid change leaves residual fluid in the torque converter that cannot be fully expelled without a complete disassembly.
  • Under normal use conditions, the 3.4 V6 automatic transmission carries a 100,000-mile change interval, while severe use conditions reduce that interval to 50,000 miles for the same engine configuration.
  • The 3.5 SV6 and 3.9 SV6 configurations share a base capacity of 7 liters, which is lower than the 3.4 V6 service fill of 7.5 liters, indicating a different transmission unit across the two engine generations.
  • All-wheel-drive variants of the 3.5 SV6 and 3.9 SV6 require 8.3 liters of automatic transmission fluid, a 1.3-liter increase over the front-wheel-drive figure, accounting for the additional fluid volume in the AWD transfer components integrated with the transmission.
  • The 3.5 SV6 (2005-2006) and 3.9 SV6 (2005-2009) share identical capacity values and change intervals under both normal and severe use conditions, with 100,000 miles for normal and 50,000 miles for severe service.
  • The 3.9 SV6 E85 variant, available exclusively in the Canadian market from 2007-2009, carries the same 7-liter base capacity and 8.3-liter AWD capacity as the standard 3.9 SV6, with matching change intervals of 100,000 miles under normal use and 50,000 miles under severe use.

Other Systems