I am pulling a trailer this weekend to St. Louis, wondering about getting this done before I go? I have the parts, might have to scrounge a PCM....
Can you get away with NOT putting in the PRNDL wires temporarily?
I am pulling a trailer this weekend to St. Louis, wondering about getting this done before I go? I have the parts, might have to scrounge a PCM....
Can you get away with NOT putting in the PRNDL wires temporarily?
Yes, But it would be "BEST" to install them when you get the chance. If you get a P1336 code for the Crank Relearn Procedure, you will need those 4 wires hooked up to do the relearn. You can cheat and jump a couple of wires for the relearn---But it is best to hook them up.
Jeff
98 GMC RCSB, 5.0, 4L80e, Moser M60, 4.10 gear, Homemade twin turbo w/Junkyard T3 turbos, 24x CNP, 12200411 PCM.
I did not have to have them hooked up to do a Crank Relearn and still do not have them hooked up. In HP Tuners you have an option for a P/N switch, just choose NONE and it will use the internal switches in the 4L60E. My Idle speeds respond perfectly and the ECM knows which gear it is in.
Well that would take out the hardest part of the swap! Fat chance of getting EFI Live to add anything, but if we had a disassembly we could write a CAX file to add the parameter? You know of any LS1b dissasemblies started?
Haven't looked to see if TunerCat has this option?
1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
-= =-
98 GMC RCSB, 5.0, 4L80e, Moser M60, 4.10 gear, Homemade twin turbo w/Junkyard T3 turbos, 24x CNP, 12200411 PCM.
Agreed - Tunercat has this parameter - at least for some Gen III OS anyway. See attached PDF as an example ...
I'd have never run them wires if I did not have to...
Here's the hex address... CAX file for EFI Live or whatever in HP TUner! 0x1E5C2 Gear Indicator (0=None 1=PRNDL 2=P/N)
Or just open all the 0411 tuns, make them bins, fix them in TunerCat and POOF! No more wires...
1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
-= =-
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