Nathan Martin

I have an 05 Yukon and I have been dealing with the exact same issue I wasn't able to see the video but from what I have read it's the same only I call it a chirping sound, and guys I have to say its completely consumed me I some times come home from work and pull valve covers and break out my long screwdriver and spend over half the night probing and listening. I even stayed up all night changing the rocker arms this is the first time I herd anything about the flex plate, looks like its gonna be a long night. Whish me luck. Oh and it's not anything to do with the AFM mine is an 05 with a 5.3L it doesnt have it.