All,
I retrofit Land Rovers with LS conversions. GenIV engine/6L80e trans/LT230 transfer case. (E38/T43) I have been slowing adding features to the conversion. Recently started building custom plug-n-play wiring harnesses for these applications. I currently have the E38/T43/BCM integrated. The last step is the 4wd low signal. My investigations have determined the 4wd low signal on the E38 ECM (X1, pin 2) is only functional if the vehicle came with a manual transfer case. No TCCM. This functionality seems to be compiled into the OS version or segment. EfiLive guys correct me here if I am wrong.
I verified this with my 2007 GMT900 Silverado with a floor shift transfer case. So, I am after either an E38 OS or VIN number from a Silverado/Sierra, 2011+, 4wd, w/manual transfer case (floor shift). 4.8L/5.3L/6.0L/6.2L With a VIN, I can get the OS from SPS.
Any help here is appreciated.