Bad tires, out of balance , wrong wheels , bad tie rod end.
Wheels require balancing.
have the tyre checked for balance
have front suspension checked
possibilityThe car is out of alignment or you have a wheel out of balance.
Check tire balance or wheel bearings in front axle
Probably wheel balance.
The fact that it's a piece of junk chevy, get a mustang. Ford all day.
have your front tires rebalanced.
problem with your transmission in 5th gear
Tires out of balance, bent wheel, or defective tire.
A worn out Universal joint in the rear driveshaft.
Worn steering parts, worn suspension parts, tires out of balance, out of alignment,