Directed Electronics GMDLBP GM Door Lock, Alarm, Transponder and Passlock Interface Module for J1850 Type Models GM Door Lock Module Alarm & Transponder Module Passlock Module Combo bypasskit and door lock Data buss doorlock alarm and gm(r) passkey/passlock Lock/unlock, driver's priority unlock, trunk/hatch, oem security arm/disarm, door trigger output and override Gen2 and 3 Gm(R) passkey3 transponder immobilizer & passlock 2 immobilizer via data bus No key required