I've got a 99 Yukon with the same highway stumble. Mine seems to be worse when the a/c is on.
Is your Check Engine Light on? Mine is not so I don't have a good place to start looking. I was thinking TPS but now I'm not so sure.
Need some help with the wife's Yukon. Something has been draining her battery and I'm not sure what. She says that she has been hearing the headlight switch make a clicking noise and she is sure that the switch is the problem. Anybody else had a similar problem?
sub'd for future use, my wife's 99 Yukon is doing this and my thought was a loose chain in the transfer case because there is play in the drive shaft and I could hear noise in the transfer case.
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