Why do the front wheels lock up when turning with a 1995 Jeep grand Cherokee?

Answer 1

If by lock up you mean squeal when cornering, such as in a parking lot, this is because the grand Cherokee (4x4) is commonly an all-time 4-wheel drive. You can determine this by looking at the 4X4 shifter and it should say quadra-trac. When cornering, the wheels spin at different speeds which causes the computer to think it's losing traction, then engages 4X4 and locks up the front end. Thus, causing it to "bark" or "squeal".

Hope this helps,

-Dayne