03 envoy

:banghead:help i love my 2003 envoy xl slt but i have been having a few problems with my abs & PARKING BREAK LIGHT COMMING ON THEN THE SERVICE LIGHT CAME ON also has a vibration at about 40-50 mph the rpm go up if i let off the gas it stops could this problem be in the trans i had the trans servised the lights have stopped comming on but the vibration is still with me thanks for your time

Welcome to AF, very broad issue this vibration, where is it? In the steering wheel, what speed, feel it in the seats /floor? This type of problem needs to be diagnosed on site, many things can cause this.

hi all on a 03 envoy do the tranny and the tcs have anything to do with each other and if so at what point do they work together and how many speed sensors are on this car and where are theyif the tranny cant find a gear would the computer think the car was sliding and cause the abs & break light to come on

No.