I have an 01 silverado 1 ton duramax pickup.When the brakes are applied within a few seconds the pedal will vibrate slightly then will make a noise like the antilock brakes.The truck has 60000 miles,sets mostly with a 30ft trailer hooked up.
It never had real good brakes,even when new.I just had new brakes and rotors installed and it still does the same thing.At first it only did it pulling the trailer,now it does it with the empty truck.My dealer says that's normal.With 4 wheel disc brakes i think it should have better braking.I got rid of a dodge cummins 1 ton because it did the same thing,only it's brake pedal would go to the floor and you would have no brakes.they couldn't fix it either.
It never had real good brakes,even when new.I just had new brakes and rotors installed and it still does the same thing.At first it only did it pulling the trailer,now it does it with the empty truck.My dealer says that's normal.With 4 wheel disc brakes i think it should have better braking.I got rid of a dodge cummins 1 ton because it did the same thing,only it's brake pedal would go to the floor and you would have no brakes.they couldn't fix it either.