ddann19
Member
Took my 2012 Yukon 6.2L with 170K to my mechanic recently for a concern I was noticing at about 60 MPH. I totally feel like one of those signs mechanics have that charge per noise or vibration it is making. But I need some help. I cannot seem to find much on here, and he couldn't get it to do what I was trying to describe. So at about or around 60 (+-3MPH) as you are accelerating there is a slight shutter, stutter, rumble, for no more than 3 seconds and then its gone and everything is back to smooth sailing. RPM will flutter a little over it, but its hard to catch it cause its so brief.
I have the diablo tune programmed, AFM shut off, ran a can of sea foam through, run 91 Octane ethanol free, All fluids(trans, diff, transfer case, brake, coolant) have been changed in last 6 months. 15K since transmission change, its been smooth shifting.
Got any leads for me to track down or places to start looking for the cause?
I have the diablo tune programmed, AFM shut off, ran a can of sea foam through, run 91 Octane ethanol free, All fluids(trans, diff, transfer case, brake, coolant) have been changed in last 6 months. 15K since transmission change, its been smooth shifting.
Got any leads for me to track down or places to start looking for the cause?