Well folks I am going to be AV-less for about 3 days.my Avalanche has to go in for surgery (so to speak). I was driving down the road and all the sudden my "Service Engine Soon" light comes on so I take it to the dealership and yup my knock sensors are bad so they have to take apart my Avalanche's motor to get to them and it is going to cost me about $500-600 dollars to fix because I am out of warrenty (57K miles) and they did say that if the knock sensors are rusted then they will have to redrill and retap all of them and would be with my AV for about 5 days
I don't know what I am going to do with out my AV for 3-5 days
has any one else had this problem with there motor?

