What is you Suburban trans?
I just had a 4L60E rebuilt in our 1997 Yukon and 3 times back to the shop, first was a loud clank/thunk as the torque converter unlocked and scattered....it was at about 25 mph and I knew something went south, but the shop said they would stand behind it and to keep driving it. Few days later I was set on cruise control at 60 mph, when the engine started to rev higher with out more speed, then the torque converter quit converting torque!!! Lots of trans fluid shoved out and no forward movement. Replaced the converter and flushed system and cooler. Then I had no final lock-up, be it converter lock or fourth, I am not sure but the shop took it back and changed a faulty (newly replaced at rebuild) solenoid and gave it back. That may only be two...I will have to remember!! BUt all in all the trans is doing fine now and if it fails again within a 12 month period I have the shops number and I will give them the address to pick it up!!
I am also due for my front brakes, the rotors are very grooved, but they are grooved to the pads! So we are all good!!! I will probably use a Rockauto.com kit when we have the money, but for now when we stop from 55 mph quickly the steering wheel shimmies.
The shocks I recently replaced with Monroe HD shocks in front and air shocks in the rear since we added a 3rd row and now have more weight, we need to custom order new rear springs but the shocks will help untill then and will be used once the new springs are in. The shocks were from Rockauto.com also....I would recommend them if the ship overseas for a reasonable cost.
So yeah...what transmission does the burb have?