I swapped in a 4l80e with circle D 3200 stall. installed HD2 shift kit. I bought the trans and converter new, but second hand.
Vehicle is a 2000 GMC Sierra with a Ls1 swap. Was previously running a Custom 1 bar SD enhanced tune on the built 4l65e with no issues.
I did the segment swap for the 4l80e per the help file instructions and sticky thread in the forum. Used the same OS, from same year truck(obviously not SD enhanced tune), transferred the transmission segment as well as the transmission diagnostics for the 4l80e. Flashed and all seemed to go correctly.
I did the re-wire to the harness and added the front speed sensor and ran it to pins 22 and 23 on the PCM. Logged and all seemed to be working fine from a stand still. I re-did the tire size calculations in the tune, just for safe measure, using the tire rollout method.
I've been pulling my hair out trying to get the shift points correct. Unless I missed something with the wiring or the segment swap, I believe that I think I have an issue with one of the shift solenoids or a bad pressure manifold switch, and possibly wiring. I just replaced the ignition switch in the truck to eliminate the possibility, since the problem seemed intermittent at first.
I have a Log and configs...
The symptoms that seem to be consistent are:
-No manual 2nd(either stuck in 2nd gear and slipping really badly or slipping from 1st to second right away) Sorry, its hard to explain, but It's not right.
-Sluggish, lazy shifts in all gears.
-When starting from a complete stop, shifter in D, the truck will start in 1st, then shift immediately to second(pressure gauge seemed to spike to 175 w/ stock adapts), and then shift to 3rd. It seemed to want to shift out of second to third right away(slipping?)
-Have played with the shift pressures and shift MPH in all gears(double and tripple checked the tables for conflicts with upshifts and downshifts) and also tried running stock shift speeds for shift adapts and also tried running it with 50% from stock to try to speed up the shifts. Right now I see about 90psi on the gauge at idle, but It's been almost 100 degrees here the past few days. After playing with the shift pressures, the pressures seem much better with the exception of the slipping second gear.
-I have also logged the shift solenoids and tried to match them up to the normal 4l80e specs and they don't seem to jive at all. Did i miss something in the tune or wiring? Im hoping its just a bad solenoid of pressure manifold switch. Can any of you guys point me in the right direction to figure this thing out.
FYI- in the middle of the Log, I ran a bunch of start/stops with manually selecting the gears with the shifter.
-the Log file is with shift pressures modified a little bit and zeroed out shift speeds. It seemed to be shifting OK with the exception of the 1-2 shift and manual 2nd gear issue.
2k GMC Sierra Ls1 - Trans channel config.Channels.xml
2k GMC Sierra Ls1 - Trans config.Layout.xml
6-2-16 - fresh 4L80e wtf.hpl