There arent any sikhs in pakistani punjab. They all left in 1947.
Punjab also is very experienced and wary of the Baloch. Ghazi and his family are all Baloch as are many of AQ: Khalid Sheik Muhammed, Ramzi bin Al Sheib, etc. Punjabis would be very motivated to attack them anyway and Pujabis have a long military history in the region, sort of like the Prussians.