2003 oldsmobile alero transmission noise

[whitehorse]

why dose my trany sound like its a electric motor when its slowing down and takeing off no slips or hard shifting?

[ProTech]

First, you'd have to be sure that the noise is coming from the transmission itself. There are plenty of components on the Alero that can make a noise like that. It could be anything from a bad power steering pump, to a bad idler pulley or other part driven by the serpentine belt.

If you're sure it's from the transmission, usually the only thing that causes a whine type noise would be a trans fluid pump inside the transmission. The torque converter can make a similar noise, but problem like this usually require the transmission to be removed and disassembled to actually find the cause. Good luck!