When i stop something on the undercaridge pushes forward

You need to have a mechanic to check all the brakes on all wheels. It sounds like one of the brake shoe or disc pad is loose. Have the rotor disc check if disc brake or brake drum check if drum brake.

You said you hit something. Carefully check the transmission linkage to make sure that it is properly engaging. Crawl underneath and have someone move the linkage while you examine the movement. If something got misaligned when you hit whatever, it is conceivable that the tranny is not properly engaging due to this.
Could be a simple fix. Good luck.

clutch has gone ,yes its a auto but it does have a front clutch inside the gearbox and something could be wrong with this like either the operating piston or the linings have worn out

There is a sliver colored latch that barely can be seen on the bottom, towards the back. Push it down with a long screwdriver or whatever you can reach it with while the headlight assembly is pulled forward. It is spring loaded, so if and when you push the headlight assembly back in you will hear it lock again. Then you can turn the front lock back in place.

Sounds like a transmission issue. Have the transmission checked. I assume this is an automatic.

Hi:
The shift pattern is pretty much the same on all 5 speed cars. The top row is the odd numbers, 1-3-5
the bottom row is 2-4-Reverse. The center position is neutral

Here is the key: The shifter is slightly spring-loaded to the center position. If you hold in the clutch pedal and pull the shifter to neutral, and let go of it, it will automatically be lined up in the position, that if you pushed it forward , it would go to 3rd gear, and if you pulled it back, it would go into 4th gear.
This way, to start driving, you start out in neutral, grab the shifter lightly, and push it first to the left, then forward. This is first gear, where you start out. when you want to shift to second, push in the clutch, and keeping left pressure on the shifter, pull all the way back . Here is the easy part, 2nd to 3rd. When you are ready, push in the clutch, and just push the gear shift forward , till it hits neutral, and is spring loaded to the middle. Then you just push it straight forward to 3rd, then next shift, straight back to 4th.
Last gear, 5th: push forward to the neutral row, then Push to the right till it lines up ,and forward to the 5th gear. Reverse should only be shifted into from a dead stop. Find neutral, push the shifter all the way right, then pull back towards you. Hope this helps.
Practice a bunch in the driveway!

Sound like tha ABS motor needs relacement

Check for any kind of obstructions in the track. If there is nothing there, you can try to have someone push the bottom of the back of the seat while you push the forward button, and vice versa. Sometimes the rails get stuck from debris or something wedged in the track. The only other thing I can think of is to take the seat out, remove the drive shaft and try to knock the track free with a hammer.

just fixed one myself. replace rear output shaft seal on transfer case.