Maybe someone here can help me? I have 03 discovery I bought the truck it did not move so I changes out the trans truck still don't move can someone please give me some direction on this please

 

Transfer case engaged?

 

Yes the tranfer case is engaged

 

Diff blown? Any shaft turning? Be damn careful under a truck that don't move - because it may change in an instant.

 

Chock the wheels, start the engine, parking brake off,put in drive, look under truck.
What is moving?
Front driveshaft?
Rear drivershaft?

 

Sounds like you have one diff blown. Do you have a check engine light on
?
I agree, you need to see, if while running in drive, do you have one of the gear shafts turning?

 

I hope this is allowed. I have a similar problem with my 03 Discovery. It starts and runs but doesn't want to go. When I put it in drive the rear driveshaft spins but doesn't seem to be putting any power to the rear wheels. Is the rear diff blown or is there another possibility? Thanks for any help as I am a noob when it comes to working on these rigs.

 

If the truck is in drive, and the rear driveshaft is turning, but the truck won't move, then the ring and pinion and/or spider gears in the differential are broken.
Fortunately, the entire center section of the differential unbolts and lifts out.
You must remove the rear wheels, and then pull out the axles.
You can buy a used differential and put it back together.
It's not a bad job.

 

If the truck is in drive, and the rear driveshaft is turning, but the truck won't move, then the ring and pinion and/or spider gears in the differential are broken.
Fortunately, the entire center section of the differential unbolts and lifts out.
You must remove the rear wheels, and then pull out the axles.
You can buy a used differential and put it back together.
It's not a bad job.

 

Six-pack could also be a snapped axle as the 03 is open open open but diff is more likely