I had the same problem. Not sure if I fixed the problem, but I changed the stereo and it seemed to work. It had a custom stereo. If that's not the problem, it might be your computer module.
No, a 4l560e out of a 01 GMC Z71 will not fit into an 05 GMC Sierra 1500.
Z71 means that the truck came factory with offroad performance suspension
4l60e
I do not have a Z71, but my 2004 GMC does not have a fuel filter, very strange because when i go to a parts store they have one listed.
its inside the alternator
its called a 700r4
i use floor jacks
6x5.5
Lug nut torque 1997 gmc k1500
200 hp
That would be the 4L60E
My 04 Z71 1500 is 295 hp stock.