Hello everyone
today I took my truck to the dealer, for some other problems..
the thing is I forgot to tell the S.A that I am having this vibration ..


when I turned my A/C on and my truck is on D and I am pressing the brake pedal I get some vibration on the pedal, if I turned the A/C off its just fine.. can someone help me out here, what can this be a posible cause. tomorro ill call the S.A if I can get any info, would be great...

thanks