I think GCC seems to be out of question these days for Pakistan. But still I would be with the point that the "Plan of Pak Military to secure Hijaz" should be there.
In the past, I have seen a post with a couple of comments happening in this PDF about Pak Military opening bases in Hijaz region and may be with Turkey. These bases might going to have equipments/machines like:
Air Force - May be 2 Air Bases (North & South):
40+ JF-17s
2-3 AWE&Cs (Chinese & Saab)
6-10 MALE UCAVs
10 Super Mushak
02 DA/20 Class EW & Surveillance Aircraft
SSWs for Air Base Security
Army Couple of Bases in Hijaz:
200-300 Al-Khalid Class Tanks
500-1000 Wheeled & Tracked APCs
50K+ Soldiers + SSGs
15 Attack Choppers
30-50 Helicopters
UAVs
and even more...
Navy May be a Single Naval Station:
2-3 Frigates like F-22P Class
2 Submarines and may be midget ones
2-5 FACs
3-5 MPAs
10-15 Patrol Boats
2-3 Tugs
UAVs
5 Helicopters
100 SSGNs
and even more...
Although, with Turkish presence with Pakistan can make the things work much better.