MSgpio.com read only forums (Jan.15,2018)

4L60E

Trying to tune out my slight surge at stop lights and such. I've got TPS reading 0% and the brake signal. Idle is about 650-700 depending on engine temp. When I come to a stop, the truck pulls a little as more of a surging than a steady pull. The brakes easily over power it but I feel it happening and it's driving me nuts. I'm thinking line pressure at stop is too high.

This is more likely an engine tuning issue than a problem with the GPIO.

Do you have a data log of this behavior?

No data log. Very sure it is transmission related. Feels just like my buddy's Dodge did when his OEM ECU went bad and was trying to lockup his torque converter at idle. Totally different engine and transmission than my 350 and 4L60E but the exact same feeling. Hoping someone else has felt this before I remembers what setting they adjusted to stop it.