Extremely loud squeal when shifting to 3rd gear

When I have had trouble with V-belts squeal or serpentine belts the belt is loose need to adjust tension or tension pulley bad. Belt wore and needs replacing or some of the pulleys are dragging while rotating or turning, could be bearing for pulley going bad.
Check belt is tight, look of high wear a lot of cracks in the belt. You can try loosening the belt and turning the pulley which will turn and see if they odd sounds or stiff to turn.
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most likely, the primary clutch is faulty and requires repair or replacement.
Weight, Shift ? 14 ?Asm., Roller and Bushing

Check your belts and pulleys. Belts should not be cracked and pulleys should turn freely with no noise.

You have a failed clutch throw out bearing

sound like u need a new belt. its slipping or a pulley is bad

maybe front pump going bad take to transmission shop have looked at

The squeal is coming from the alternator belt, When the temp is low, the belt is hard and glazed and lost its ability to create friction.

Try removing the belt and turning each pulley by hand. If everything is smooth and free, with the belt still off, drive down the block once and see if the noise is there (this will eliminate all rotating accessories on the front). If you hear the noise, then there is a problem deeper inside. Oil pressure is good? Dont' forget when doing this, you will have no power steering, so be careful.

Belts stretch from new. Try to tighten them again. Hopefully the are not glazed or this may stay with you.

hi if its just second to thrid then the clutch is slipping on thrid gear look at the boxes oil level is important but look at the colour is it red and tranperant as this is ok if its brown its a sign of the clutches slipping i would try a stall test on thrid gear first and if its ok second gear [manually] see is the engine stalls at the correct rpm if you thinkabout it imagine you are in thrid gear in a manuual box and suddenly drop into second it would be hard shifting it could also be a faulty thrid gear solenoid yates210456