TDS deduction on job worker bill

we are manufacturer of heavy commercial vehicle. Our many parts has been processed by job worker. In erstwhile excise rule, we had sent the parts under rule 4(5)(b) of combat credit rule-2004.there was exemption on job work process, and no service tax liability on job work goods. as per income tax act, company hD deducted TDS as and paying to government. in gst regime, jobworker pay gst on their bill. our query is that, (1)we will require to deduct TDS or not. ? (2) during deduction of TDS we will deduct on basic value or including gst value? (3) if any notification is applicable please let me share?