Prostar to much play in the steering wheel

[Rawze]

Sounds almost to me like you are describing a caster alignment issue where the steering floats in an unstable manner instead of centering itself like it should.

I would have someone check the springs for weakness, and angle of the caster alignment as well.

For most trucks, you need 4 degrees caster on the drivers side, and 6 degrees on the passenger side (for crown in the road). If you have air suspension front end, then you need 6 and 8 degrees instead.

For abut $30 or so, You can use this device to easily measure it, along with camber, etc. on your truck. It does not take a bunch of expensive professional alignment equipment just to see if something is out of whack.


https://amzn.com/B00T6YZ0K6


Here is some reference reading...
http://rawze.com/forums/showthread.php?t...0#pid16060
and from eaton...
http://www.eaton.com/ecm/idcplg?IdcServi...dID=476708