Front driver seat is loose

How do you know it's the seat memory module ? It is located on the bottom of the driver seat .
Memory Seat Control Module Replacement

Raise the seat to the full upright position.
Unsnap the front track cover from the seat by sliding forward.
Remove the 2 front screws from the memory seat module bracket.
Remove the front seat anchor bolts from the rear of the seat tracks.
Raise and support the rear of the seat assembly.
Disconnect the electrical connector.
Remove the 2 rear fasteners from the bracket.
Remove the memory seat module (1) and the bracket.

you could try removing the electric runners off your original seats and fitting them to your new seats

There are 4 bolts which retain the seat in place. The ones in the front, the seat bracket are bent in an L shape, so you reach them by takeing a 14mm socket, short extension and ratchet and to the outer side if the seat running from front to back, you will see the bolt on the left and one on the right,.Bring the seat all the way back to make ot easy to reach and then you can remove them. Now slide the seat all the way to the front. Most ofen there is a plastic cover over each bolt. Carefully pry one side off and the cover will come off. Below the covers are two more 14mm bolts When you remove them, position the seat as forward as you can to make access easy to the bolts. the seat is loose from the car. NOTE: I got a head of my self. The rear bolts should bee removed first then remove the front bolts are removed. Additionally, Position the seat in a semi reclined position so that it will be easy to take out of the car. If these are electric, there will be connectors under the seat which must be disconnected. In the middle of the connecter where they plug in, there should be a little lever looking part on the center of the outside connector which you must depress while pulling the connectors apart I hope I haven't been too confusing. I have Parknison's disease and although I am a Nissan Master tech, the disease can sometimes affect my thought train. I have read and reread what I have written to you and am satisfied that it shouldn't be confusing and you'll be able to get the seat out just fine.
Good luck

it is easier to hit it with a welder remove seat from car to ensure you don t start a fire. be sure not to weld the bracket to rail or the seat will not slide.

pry off any plastic bolt covers where the bolts secure the seat
pull 4 bolts securing seat to vehicles floor pan
Disconnect negative battery teminal,
disconnect any electrical plugs going to the seat
pull out drivers door opening

Front seating area, driver side, under dash, above brake pedal, mounted in steering column support bracket

i hope this helps you

you will have to replace the complete assy. the cheapest way is look for a complete wrecking yard seat, or have yours welded at a local machine shop

4 bolts hold it to the floor ,unplug the multiplug connectors ,thats it .Then keep overweight people from sitting on it

these are usually attached with 4 screws order the new ones we you get them you can see were the screws go

Ok, I had similar problem on my Chevy Venture.
Step one: Lower the Back part of the seat down.
Step 2: Get a BIG flat head screw driver
Step 3: Use the screw driver to push down the Lever in the back of the Seat to unlatch the rear hooks. - You won't be able to do it by hand, not enough strength can be applied to get that rear lever to move.

Then, when you put it back in, make suure the front latches are open prior to putting the seats back in again. If they are locked, you have to open them (using the same screw driver) otherwise, you will have the same issue again.

GM Seat system for the vans sucks a$$. I've seen this problem too many times.