Tuning a 4L60E with Transgo HD Shift Kit

[Taz]

Scan to see if a DTC was set ... some DTCs don't light up the MIL.


Regards,
Taz

[blsnelling]

Would those have been cleared when I re-flashed the ECM this evening? BTW, a little Googling confirmed that limp mode on the 60E is 2nd and 3rd.

[blsnelling]

I think I figured out what caused my trans to go into limp mode on Wednesday. It did it again this morning. It was on the same road, first time on it since Wednesday. This road has multiple 90° turns, so lots of slowing down and down shifting. This time I checked the codes and it was something to do with the 2nd gear solenoid. It's on my laptop, so don't recall the exact code. I got to looking at my upshift and downshift tables, on on the 2-3 and 3-2 tables, the downshift table speeds where higher than the upshift, opposite of what it should be. The trans didn't know what to do.

[joecar]

Which DTC...?

Did you fix the upsidedown tables...?

[blsnelling]

I left my laptop at my parents:( I'll get back to you with the DTC. Yes, I've fixed the tables, but haven't really tested it out yet.