Have a saab 9-3 2.2tid..lowered the drivers side window ,there was a bit of a bang ,can hear the motor but window not moving,,i can lift the glass up an down by hand(off its runner??)..can i do this myself??

You need to have the door disassembled and the window lift mechanism checked. Sounds like the actuator arm has come off, or the motor is dead/dying. (You didn't say whether the motor makes noise when you try to operate the window.) If you're a DIYer, there are any number of videos on YouTube that will show you how to do the diagnosis.

I had a caravan. Same symptoms. It had a plastic cable that would ease and lower the window. It stripped and wouldn't go up or down

If the motor works then the window should move up, this sounds like the regulator may have broken, try to lift the glass by hand and see if it moves, if you are able to move the glass up then the regulator is bad but if the glass wont move then it would have to be the motor or the switches. you can try banging on the inside of the door while holding the switch in the up postion, this sometimes helps when a motor is going bad, good day.

hello first of all

Well there are only two things that can cause this one is the regulator gears are stripped thats the gear that the motor turns to lift and lower window. Or at the bottom of the glass window when you remove the door panel there is a little plastic tab that goes thru a drilled hole in the glass that may be broken to it common for the plastic to become brittle and break.

Help/3 pcs. Ford/Lincoln/Mercury 1965-2006 Window Regulator Gear Plug Price: $7.99
Part Number: 74410 Dorman/Window Lift Motor Price: $144.99
Part Number: 740-178 Warranty:Limited Lifetime Application:
Front - Driver side
Notes: Regulator only
those are the parts and pics of parts and part number at autozone cheapest place you will find item hope it helps if so please leave 4 thumbs up thanks

The panels have 3 t20 torx screws on the bottom and one philips head near the mirror. Under pull handles there are 3 philips on the drivers and 2 philips on the passengers sides. Pull the panels from the bottom and lift the panels up. There are 2 black rubber plugs in each door, pop each plug out and the glass is held in place to the clips on each side with either a 10 mm bolt or t30 torx bolt. Move the glass to the point where you can see the bolts, loosen, but don't remove the bolts. Once loose, you can pull the glass loose. Once loose, lower the window a bit, angle the rear of the glass up and pull it out. The glass may be epoxied in place, as VW had a problem with windows coming loose. If so, try to pop the rubber in the clamp loose (above the bolts you see through the holes) and reinstall it with the window removed.

door panel just pops off if you use care while doing. the window is not off track , the motor sounds like it came loose and is not making contact with the lift / lower mechanism.

sounds like a window lift motor, maybe try and bang on the door a few times while you hit the button, if that doesnt work you may have to take the door panel off and test the wires at the window motor

Most likely the sound is coming from your "window lift assembly" being torn up. Your window motor attaches to the back of the assembly and winds up the cable that raises and lowers your window. Most likely the cable has come unattached and is grinding inside. 
You can buy a new assembly from Autozone (about $100 is what they usually run) and replace it. The first step is to remove the side panel from your door. Once the panel is off you can see where your motor is bolted on to the center of your door. Remove the motor and then unbolt the rest of the window lift assembly. Be careful though about removing the pins that attach your window to the lift assembly. Due to the curve of the glass, it only takes a little pressure to shatter the glass. Once the window lift assembly is replaced, put everything back the way it was before and you are good to go. 
It is not that complicated of a job, it just takes a little patience. Good luck!

try cleaning your master switch with air

yes, when replacing the small plastic roller, you have to press, hear it snap once, then press harder to have it fully set into place.
Justin
Strictly Saab
Melbourne, FL