I have swapped a LQ4 and 4L80E in my 2000 mod. Tahoe (from 5.3/4L60E).
I have a problem I cant figure out. When towing a trailer (6000 lbs), and running in low gear downhill (3rd, 2nd or 1st gear) in 2wd, somthing is slipping into neutral and making a virring sound. I have to put the shifter...