Toyota Repair: Toyota Sequioa 4x, toyota sequioa, slow speeds

Question
02 Toyota Sequioa 4x 30,000 miles
Light shimmy when braking.  Dealership replaced rotors and pads. 15,000 miles later problem is back.

Fuel delivery is cut off when driving over square edged bumps and even dropping off curbs at slow speeds.  According to factory, it has a system designed to cut fuel off under certain conditions.  However, they said it appears mine is malfunctioning - even though I have not seen any engine warning light come on.

Still under warranty...  

Answer
There is a service bulletin concerning the brake vibration, were the rotors and associated parts replaced per the TSB when the parts where replaced? There are updated parts that consist of new rotors, calipers(with pads) and bearings and backing plates, this procedure cures the brake vibration, however, if your brakes are worn again, the pads need to be replaced and rotors resurfaced at your expense, it is not uncommon for Seqouias and Tundra trucks to go through front brakes at this rate.
I'm sorry, but I don't know what is going on with the fuel cut off situation, have not experienced this, I do know though, that if there is a malfunction with the VSC or TRAC control the warning lights will come on, better take it back to the dealer and have them figure this out.