Recently on my 2001 Alero my wipers have been acting funny - they will continue wiping 3 - 6 times after being turned off, they don't move smoothly across the glass when on pulse setting,(they jump and pause.) They act close to normal when on the regular "on" position. Someone said it is my switch. If that is the case, how would one go about finding and replacing the switch on this model? Thanks

Did you check fuse's & relays ?
Rear Window Wiper Operation
The rear wiper motor is controlled by the SJB. The SJB supplies power to the rear wiper motor from the integrated rear wiper relay. The SJB will activate the relay when all of the following conditions are met:

• Ignition switch is in the ON position
• Liftgate glass and liftgate are closed
• Multi-function switch is in the ON or intermittent position

The SJB also supplies voltage to the rear wiper motor from SJB fuse 21 (15A) when the ignition switch is in the ON position. This power feed is used to continue the wipe cycle when the multi-function switch is turned to the OFF position. The SJB receives inputs from the multi-function switch that applies ground to the low speed wipe input or applies ground to the intermittent wipe input. When either of these circuits are grounded, the SJB activates the integrated rear wiper relay and power is supplied to the rear wiper motor to move the rear wiper motor from the park position. An internal switch in the rear wiper motor then moves to the run position which connects the accessory relay power to the rear wiper motor. When the rear wiper motor returns to the park position, the internal switch in the rear wiper motor moves back to the park position. If the multi-function switch is in the ON position, the rear wiper relay is still activated, power is supplied to the rear wiper motor, and the wipe cycle starts again. If the multi-function switch is in the intermittent position, the rear wiper relay does not activate until the predetermined dwell time has elapsed, at which time the SJB activates the rear wiper relay and the wipe cycle starts again. The SJB is the smart junction box .(computer )

Rear Washer System
The SJB supplies power to the rear washer pump from fuse 21 (15A) when the ignition switch is in the ON or ACC position. The rear washer pump receives ground from the multi-function switch when the wash function is turned ON. The multi-function switch also signals the SJB when the rear wash is activated and the SJB then activates the rear wiper.

You obviously have a short in the wiper wiring, making contact with ground or feed wire. Have wiring checked by a reputable automotive mechanic

sounds like a ground problem

If they try to move the fuse is not the issue, You need to check the linkages, they are under the panel where the wiper spindles sit, the plastic ends can break and stop them working.

Your wiper linkage has come off the wiper motor. To reconnect the linkage, first remove the wiped arms, the remove the wiped cowl. The wiper cowl bolts are located under the hood and screws through the spaces in the cowl. Reconnect linkage, reinstall cowl, reinstall wiped arms.

you need to check to make sure the "arm" is moving , some gm vehilce have a sealed wiper unit, but the alero should still have arms. turn wipers on and look down at the cowl vent and see if it appears to move. if it is the mounting post for the arm on the passenger side has PROBABLY stripped out the soft lead mount at the bottom of the wiper arm. make sure the wipers are "parked", then carefully try to wiggle the pass side back and forth (its normal motion...). if it moves you will need to pop the arm off(super careful here..) and the post that looks smooth must be cleaned out with a fine pick or equilalent, the post accually has splines all around to engage the wiper arm. put on the new arm.. presto.... wipers.

My car does the same thing. I wondered that myself, I don't think that's what it is though, I don't think you have an issue with the transmission. Your car has TWO check engine lights, and with the Alero--if there is an issue with the transmission one of the lights will come on. I am not 100% positive of this, but I had a 1999 Bravada (Olds) and it did do that when I had a tranny issue.

I notice when I drive my 2001 Alero my right leg gets SORE from pushing the pedal so hard. I think it is age, not the transmission.

READ YOUR SERVICE MANUALS. I don't get why people ignore them, honestly they have a wealth of information in them...could have saved a lot of people lots of money when people started claiming their car wouldn't start when it was a security feature that is listed in the manual that came with the book.

It is likely that where the wiper arm is attached to the linkage  it is either loose or stripped.