1stock07
March 12th, 2015, 03:05 AM
I have a 07 classic gmc sierra that I just swapped in a lq4/4l80e transmission. truxk is being tune by a reputable turner and we have been dealing with converter lock up issues..
right now the tune is great just that we can figure out why it's locking in 2nd at 25mph when tune commanding 48 mph. my truck has the speartech adapter harness. I took it to a trans shop and they basically said it may be the adaper. so now I'm going to repin the 60e harness and see what happens. an one else has come across this problem.
right now the tune is great just that we can figure out why it's locking in 2nd at 25mph when tune commanding 48 mph. my truck has the speartech adapter harness. I took it to a trans shop and they basically said it may be the adaper. so now I'm going to repin the 60e harness and see what happens. an one else has come across this problem.