Left rear window stuck down. Hear motor working but doesn't lift the window.

BCM is bad or has no power.

should'nt have individual fuses,brushes in motors may be stuck,tap on door panel while trying to operate window may get them working,if does'nt work may have to get to power motor.check for power to doors with test light first

BY PASS SWITCH BY RUNNING A FUSED JUMPER WIRE FROM THE BATTERY POSITIVE TERMINAL TO WINDOW MOTOR CONNECTOR, HOT SIDE, AND A NEGATIVE WIRE BACK TO BATTERY NEGATIVE TERMINAL...IF WINDOW OPERATES....IT IS THE SWITCH

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.

first try slapping the door while holding the lift button . this will only work if the motor has a bad spot inside it . the deck lid does not open I would check to see if the fuse for the that window lift is on the same circut and check fuse

poss off track or your window motor is bad do u hear it working in the door if so then its off track or if u dont hear any thing whren u hit the switch then your motor or fuse it bad

If it is the switch, both switches have to be defective, which is not impossible, but very unlikely. If during movement of another window you can distinguish the motor sound, but do no hear anything alike from the left back door's window, it is either the motor, or a loose wire after the switch. Most likely the point of interruption is where the door wires enter the door, due to constant bending there. Finally, if you hear the motor, it is the mechanism which the motor drives. 

Yes you can unbolt it from the regulator that it rides on. You should see a couple of bolts holding it in place unbolt it and pull it out so you can work on everything and then put back in.

It may be possible the rear windows are mearly stuck in the closed possition. If they are not used often they can actually stick to the weather stripping in the window frame & not allow it to go down. You can try to "bump the window with the heal of your hand a couple times while holding the window switch down. If this doesn't work you can also try "banging" the door frame. If you can hear something inside the door when you try to operate the window it is usualy the motor trying to open the window. You may need to try to close the window & then try to open the window again in order to hear anything. If you think this may be the case you can also close your hands on the top of the window(one on either side of the window, Inside & out side) and pull down with all the force you can while a friend operates the switch.
If it is not stuck... there is no separate fuse for each window. you will then likely have have a motor or switch issue how ever this is unlikely on the windows that are used the least.
Good luck, hope this helps
Farrout.

the power window on 2000 chev suburban is stuck down. i removed the door pannel and the motor works but it appears the wiring on the pulley is not right any info how to remove.or repair that system?