2005 tahoe help me please

[ebetide]

hello, im new to the group and need some help changing the radio ant cable that runs from the firewall into the cab under the dash, i need to unpug it and have to remove the dash top to get to the cable, iv removed the glove box, gauge trim, passenger air bag, all the 7mm screws i can find, any one have pics or tech details,
thanks in advance, Greg

 

[Eagle]

http://ppd.delphi.com/pdf/consumer/tnr800_install_guide.pdf