[SilveradoGuy82]

Hey guys,

I have a 99 Silverado 6.0 4L80E , and from time to time when im at lower speeds (20-40MPH) just cruising in overdrive at low RPM if i come to an incline sometimes it seems to surge and or almost like a miss fire or something along these lines, but as soon as you take out of overdrive or use a bit of pedal and let it down shift it's fine, it doesn't do it all the time it just happens mabye once every few days, but man is that anoying, it jolts you in the seat and im sure it cant be good for the truck... I'm wondering what this could be caused by and if anyone has run across this problem...
I'm stumped at this point... mabye a sensor or soemthig??
any suggestions would be appreciated :-)

Thanks Guys...

- Jimmy