tailgate glass won't open

[89Suburban]

the wiper arm broke off and the nut is rust welded onto the shaft, until I get time to source a wiper motor I won't have a wiper arm so hopefully no decapitation by wiper arm

Use a Diablo metal cutting blade to cut that nut off.

Check out this thread for bypassing the wiper motor and which wires to jump to get the glass latch circuit operational. I temporarily used a jumper wire taped to the plug. I did go back in there and cut and solder the 2 wires since I did the rear wiper motor delete.

What did you do to your NNBS GMT900 Tahoe/Yukon Today?

without the parking stop being there not sure, people have had problem with the rear glass not opening and it is usually because of the rear wiper not in the correct position, happened to me on my nbs these are the same design mechanically. I am going to investigate the wiring from the push...

www.tahoeyukonforum.com