01gmc
11-17-2014, 06:55
My 3500 hd has no gear indication, tow/haul mode doesn't seem to be working. Transmission shift is somewhat erratic, check engine light is on, pulled the code, p0700 and also no communication with the TCM.
Changed NSBU switch and still the same problem. Further diagnosed found yellow wire pulled from gray connector at the TCM. What is the fix for this? Also the green and black wire seem to be slightly pulled as well,but the yellow is totally pulled from grey connector.
Changed NSBU switch and still the same problem. Further diagnosed found yellow wire pulled from gray connector at the TCM. What is the fix for this? Also the green and black wire seem to be slightly pulled as well,but the yellow is totally pulled from grey connector.