Air in ABS causing front brake vibration..........UPDATE BRAKES FIXED

[evilunclegrimace]

Swap tires front to rear and rear to front , see if the problem follows the tires. Check the wheels to make sure that one of them is not bent.

 

[Erik the Awful]

2wd rotors dont have separate hubs. They're 1 piece...

Apologies, I thought the later GMT400s had separate hubs and rotors.

 

[Nad_Yvalhosert]

Apologies, I thought the later GMT400s had separate hubs and rotors.

Nope. Separate hub and rotor started with the GMT800's. All the 400 2wd's had serviceable bearings too. A coworker of mine has a 2wd '99 Tahoe...
The 800's went to 6 lug 2wd wheel bearing assy's, slip on/off rotors and could interchange wheels between 2wd and 4x4.

 

[92GMCK2500]

The (Raybestos) drums that I put on my K2500 a couple of years ago were garbage from the factory. Crazy how out of round they were.

Same here! They needed turning by the machine shop. So bad.

 

[N Ga Rider]

Schurkey, Im beginning to think it might not be the brakes. May be something in the steering linkage. I just cannot pin it down to what it is. My brake pedal is really good and brakes work great. This truck has 67,000 original miles on it. Was bought by my father in law in 97 and he passed away 3 weeks later. My mother inlaw used it but it really has not been driven in years. Was parked under a carport and she never wanted to sell it. She gave it to me 2 months ago.

 

[N Ga Rider]

Truck rides great and has never been in an accident.

 

[HotWheelsBurban]

Wow, that's a clean truck!

 

[Pinger]

Time to have a look at suspension bushes and ball joints?

 

[Dariusz Salomon]

Schurkey, Im beginning to think it might not be the brakes. May be something in the steering linkage. I just cannot pin it down to what it is. My brake pedal is really good and brakes work great. This truck has 67,000 original miles on it. Was bought by my father in law in 97 and he passed away 3 weeks later. My mother inlaw used it but it really has not been driven in years. Was parked under a carport and she never wanted to sell it. She gave it to me 2 months ago.

Does the vibration happen at any speed-high-low?

 

[El Tigre]

Unplug ABS to see if problem suddenly "goes away". It did for me.
Ended up deleting ABS ,and haven't had a brake issue since.