Some 2024-2025 Encore GX, Enclave, XT4, XT5, XT6, Blazer, Trailblazer, Traverse, Acadia, Terrain; and 2025 Equinox models equipped with the 9T45/50/60/65 9-speed automatic transmission (RPO M3F, M3U, M3H, M3T, M3G, M3W, M3V) or 8T45/65 8-speed automatic transmission (RPO MGH, MF8) may have a transmission fluid leak coming from the torque converter housing area. The leak may be due to insufficiently torqued transmission pump bolts. (Fig. 6)
Fig. 6
If a leak is present near the torque converter housing area, check the transmission Julian build date listed in Bulletin #25-NA-001 and order the bolts required. (Fig. 7) The pump cover bolts are single use fasteners.
Fig. 7
Once the bolts arrive at the dealership, remove the transmission and verify the transmission pump bolts are loose. If loose, replace all bolts and reinstall the transmission. (Fig. 8)
Fig. 8
Refer to Bulletin #25-NA-001 for more information, including part numbers.
– Thanks to Mark Kevnick
