Something moving

[jyocum39]

I have a 99 silverado Z71 4 X 4. When i take off it feels like the front end is shifting backwards or towards the cab. At highway speeds the truck runs awesome. It does this in 2wd so its got me really confused. Any help would be appreciated.

Thanks

[Jimmiee]

Your best bet is to get your truck up on a lift and check it out. It could be a number of things causing this but there's only one way to know for sure.