My truck for the last few thousand miles has occasionally surged while cruising highway speeds (55-75) with the cruise set. It seems to surge foward and shift a half shift... It seems to be getting more frequent but I cant make it do it, its still sporadic. Is my convertor not locking in OD? Happened 3 times yesterday, twice at 75 and once at about 60.

Truck has 36k.

Any info would be great before I call the Dealership.

 

I also have a strange "surge" sometimes when accelerating under a very light load. Seems almost like a "slip", where the engine RPM goes up for a couple of seconds then catches and things are back to normal. Could that be the torque converter letting loose for a few seconds ? I only have 16K miles on mine.

It's not bad, but when it happens, it's noticeable and makes no sense at all.

 

What dealership are you going to deal with in upstate ny (???)

 

Mine does it once in a while. As I'm mostly highway, it seems to be the same while cruising at about 80-90 km/h and is sporadic. I mentioned it to the dealer when in for a recall but will wait and see if it continues before letting them touch my truck. It is the only complaint I have with this truck, so I will wait before warranty is due and if it persists I will follow up.