If the gear shift lever does not move out of drive, or if the lever moves but the transmission stays in drive, it is possibly the linkage and a relatively easy fix. Turn everything off, then look under the hood along the steering column or under the vehicle for something that is hanging loose or moves when the shift lever moves.
It is a completely different transmission than what was used with the diesel before.
A518 is the transmission if it is an automatic, and if it is a manual then it is a Getrag 360.
47RE
Automatic, yes
A518
should be a C-6
That should be a 4L80E transmission.
A 1997 NPR Gasoline uses an automatic 4 speed 4L80E General Motors Transmission. A 1997 NPR Diesel uses a automatic 4 speed JATCO transmission A 1997 NPR Diesel uses a manual transmission MXA5D
You can buy pretty much any car with a diesel engine, that's automatic. My friend has a Audi TT Quattro with an automatic diesel engine. you're welcome.
4l80e
The automatic is a 47 RE. The manual is a NV4500.
Mopar ATF+4