Beta GM automatic transmission megapack 1.6

New update for this mod, v1.5, supported for BeamNG.Drive v0.38

Fixed an issue with the GM 5L40-E transmission.

The issue was caused by the diesel variant of the GM 5L40-E causing the gasoline variant of the GM 5L40-E to become non-existent, causing only the diesel variant to be visible from within the Vehicle Config tab under Parts.

This was caused by the diesel variant of the GM 5L40-E to have the same ID or part ID/name to be the same as the gasoline variant of the GM 5L40-E.