I am new here would appreciate any help/info I can get!!
I have a 2003 Sierra Denali with QS and it has a terrible whinning sound right around 40 mph that doesn't sound right. Is this normal? If not, any ideas what the cause could be??
Also, it takes bumps poorly and feels like it could use some new shocks. (it has 120K on the truck) Any advice on the most resonable route of changing the shocks???
Thanks again in advance for helping out!!