Hi Guys,
I have a 1999 Suburban 1500 GMT400 with the 5.7 and 4L60E.
At highway cruising speeds I'm getting a slight hesitation or surge feeling. Almost like hitting little bumps, but I can tell it's the power hesitating slightly. This only happens at light throttle cruising speeds, like when holding 65 on a flat highway. If I give it more throttle or let off, it goes away. No issues at all at idle, acceleration, or decel.
Any idea what could be going on or what to look at here?
Thanks!
I have a 1999 Suburban 1500 GMT400 with the 5.7 and 4L60E.
At highway cruising speeds I'm getting a slight hesitation or surge feeling. Almost like hitting little bumps, but I can tell it's the power hesitating slightly. This only happens at light throttle cruising speeds, like when holding 65 on a flat highway. If I give it more throttle or let off, it goes away. No issues at all at idle, acceleration, or decel.
Any idea what could be going on or what to look at here?
Thanks!
