joshua022

iTrader: (12)

I have a 5.3/4l60 in my 68c10 and the transmission just started acting up..

Whenever its under a load going up hill between like 40-50mph it jumps in and out of overdrive.

Stock converter, stock ECM no tune whatsoever.

Didn't seem to have issues before I wired up my auto meter gauges, and the speedo ties into the VSS and the PCM speed output. Could this have something to do with it.

I just got it home and checked the fluid and its not even on the stick, I will get it topped off in the am and recheck it. I've only had the truck like 2weeks.

I've done lots of searching on here and got a variety of answers for this same complaint.

Thanks
Joshua

Gearstar Performance

On a 4L60E when you are wiring your autometer gauges into the vehicle speed sensor it could of had an effect on the operation of the transmission. The first thing I would do is to ensure the trans is full of fluid and verify you still have the issue. Then find out where you have a leak and get that resolved.

joshua022

iTrader: (12)

It was 2.5 qts low on tranny fluid, but the problem is still there.

No visible leaks that i can find, I have only had the truck a few weeks.

I am trying to contact the PO to see if he ever had any issues?