I bought a pre-owned 98 Tahoe from a friend. He is a mechanic and also an enthusiast. He rebuilt almost every movable part in the drivetrain, suspension if needed, replaced any wear and tear. So when i bought it, at 195,000 miles, i was pretty convinced i found a nice project truck. Long story short, there was only 2 serious issues about the truck that i was stuck with fixing with out of my own pocket. One was the brakes.... rotors, pads, drums, master-cylinder and everything possible needed to be replaced because i had to push the pedal to the floor before the truck would stop. Thousand bucks....well spent. But then... there's problem 2. The raddling. At a certain speed, sometimes 40, 45, even 65 mph the dashboard, the cab and the hood will start to raddle/ vibrate so bad that i have to either speed up or slow down for it to go away. WTF is it. Ive taken it to several places where licensed "professionals" tell me something different anywhere i go. So i need to save money and not pay people to tell me the same thing. Does AN'yBODy know anything about this? Please help me pinpoint the problem. Thank you.

 

Welcome to the forum.

Sounds like the wheels could be out of balance- but did it do this before the brake job?

Might be as simple as something not being seated right. Pick -up the front end. Try free-spooling em while you got it off the ground- listening for scrapes/rubs. If you can identify a specific wheel that has a funny sound - Pop that one and check the rotors to make sure they're on all the way. Re-torque in a nice star pattern.

Of course if you had the work done at a shop I'd take it back to them.