RAM 2014 Class action suit

Home Skillet wrote:
It is not as simple as changing the gears.
The vehicle is certified as it is sold. Any alterations will affect the certification by the EPA etc.

Not true - all available axle ratios are certified so that certification is not affected by a different ratio being installed.
Diffs are NOT installed at the vehicle assembly plant, entire axles are shipped in with different part numbers for each combination.

Don't know about RAM, but where I used to work all major assemblies were verified by bar code AND component serial numbers recorded. A wrong axle assembly simply would not get through.
I would suspect the wrong ratio was installed at the axle assembly plant and RAM has just discovered that.