The windows are missing the guides

Rear Passenger Power Window Operation
The rear passenger power window switches receive battery voltage through the window lockout control circuit if the window lockout function is disabled. Ground for the rear passenger power window motors is supplied through normally closed up and down contacts of both the rear passenger power window switches and the driver power window switch. When the either rear passenger power window switch is placed in the down position, the power window motor down control circuit is switched to 12 volts and is applied to the down side of the rear passenger power window motor. Since the other side of the rear passenger power motor is connected to ground through the normally closed up contacts of both the rear passenger and driver power window switches, the window travels down. By placing the rear passenger power window switch in the up position, the polarity of the power window motor is reversed and the window travels up.
The rear passenger power windows can also be controlled from the driver power window switch.

Did you try pushing the lock out switch on the drivers master switch ?

Yes they run a wire loom that has wires that are not used in some models. One thing you need to check is the wire loom because it flexes every time the door opens and closes and wires can break .Also you may want to go to autozone website and make a free account, you can put in the year make and model and look for the free repair guides for wire diagrams.

I would check the tracks in the door. Could have a guide missing.

look at your driver side window check the top left with the window up see if there is a little black thing there called a window guide most gm vehicles use them

The motor on the passenger side is shorted and is now tripping the circuit breaker. Odds are, the back window motor is also bad. You have to take the panel off to check the motor. You can power it directly to verify it has failed.

The most common problem with Cabrio auto windows is the Window regulator. Each window has it's own. My wife also owns a 2002 Cabrio, that had a mis-behaving window driver window and the passenger was locked in the up position. After inspecting the drivers window, I found one of the cable roller guides was broken, causing the cable to snag when using the window open / close, and resulting in the window seeming to have a mind of it's own. I had a local garage order the regulator for me, and then I disassembled the drivers door and installed the new regulator (problem is now solved).
The passenger window was bound up, I also had to remove the regulator and let loose the tension in the cable system by carefully removing the cover over the cable roller. This window works fine now as well.

if you know its coming in from the rear window replace that seal. if you are not sure have someone spray water from a hose on the area even gently at a low flow until you pinpoint it.other wise the quesstion isnt clear.

Replace the guide with a good one from a auto wrecker. These are cheap, poorly built cars from South Korea. The front wheel drive Pontiac LeMans was also built by Daewoo which GM owns a share of, and they had lots of problems compared to the German built Opel Kadett/ UK built Vauxhall Astra that it was based on. You get what you pay for. My advice is to find a cheap source for parts or trade it in on something more reliable.

You just drop it down from the top at a slight angle. Then put the bolts back in and check to make sure that it moves freely.

The front guide (that is attached to the window and slides into the regulator) has probably come off or is lose. These are glued to the window and hard to get to. Best advise is to remove the window, re-glue, then replace window in the regulator guides.

The regulator is the scissor mechanism that raises and lowers the window.