no key wires, you need a programmed key( one that will start the car) to place in the 556u, and then you wrap the wring around the ignition switch, this will generate the siganl when relote started so that car sees key transponder
also car has a strange 2nd ign/keysense starter setup, starter wire from remote is not needed car cranks when it senses ignition&acc on then acc drop with proper resistance on WHITE/ white blk wires car will crank, it is a pretty wild system, and most gms have no required starter wires anymore just sees acc drop then it cransk but some have this resistance requirement
12volts RED / white (2A) + ignition harness
Starter yel or pur/wh (not for rem st) -,+ PCM, blue plug, pin 23 or 26
Notes: Starter wire is not required for remote start. When the vehicle sees that the ignition wire has voltage and the accessory wire lose voltage, it automatically cranks the starter.
The PCM (Powertrain Control Module) is in front of the battery on the driver side fender.
Second Starter N/A
Ignition pink + ign harn or BCM, C4, pin D3
Notes: The BCM (Body Control Module) is part of the fuse/relay box on the front passenger side of the center console. It has the following connectors: C1-72 pin gray plug, C2-72 pin gray plug, C3-41 pin red plug, and C4-68 pin lt. gray plug.
Second Ignition N/A
Third Ignition N/A
Accessory brown + ign harn or BCM, C4, pin C8
Notes: The BCM (Body Control Module) is part of the fuse/relay box on the front passenger side of the center console. It has the following connectors: C1-72 pin gray plug, C2-72 pin gray plug, C3-41 pin red plug, and C4-68 pin lt. gray plug.
Second Accessory N/A
Keysense not required
Power Lock white - driver kick or BCM, C1, pin 66
Notes: Lock is a straight negative trigger. Unlock is negative trigger thru a 1.5K ohm resistor. MUST use relays.
The BCM (Body Control Module) is part of the fuse/relay box on the front passenger side of the center console. It has the following connectors: C1-72 pin gray plug, C2-72 pin gray plug, C3-41 pin red plug, and C4-68 pin lt. gray plug.
Power Unlock same as power lock wire
Lock Motor gray/black to gray 5wi driver kick or BCM, C3, pin A5
Notes: The BCM (Body Control Module) is part of the fuse/relay box on the front passenger side of the center console. It has the following connectors: C1-72 pin gray plug, C2-72 pin gray plug, C3-41 pin red plug, and C4-68 pin lt. gray plug.
Unlock Motor tan 5wi driver kick or BCM, C3, pin B1
Notes: The BCM (Body Control Module) is part of the fuse/relay box on the front passenger side of the center console. It has the following connectors: C1-72 pin gray plug, C2-72 pin gray plug, C3-41 pin red plug, and C4-68 pin lt. gray plug.
Parking Lights+ brown + BCM, C3, pin A7
Notes: The BCM (Body Control Module) is part of the fuse/relay box on the front passenger side of the center console. It has the following connectors: C1-72 pin gray plug, C2-72 pin gray plug, C3-41 pin red plug, and C4-68 pin lt. gray plug.
Parking Lights- BROWN / white - switch or BCM, C2, pin 5
Notes: The BCM (Body Control Module) is part of the fuse/relay box on the front passenger side of the center console. It has the following connectors: C1-72 pin gray plug, C2-72 pin gray plug, C3-41 pin red plug, and C4-68 pin lt. gray plug.
Hazards white - switch or BCM, C2, pin 9
Notes: The BCM (Body Control Module) is part of the fuse/relay box on the front passenger side of the center console. It has the following connectors: C1-72 pin gray plug, C2-72 pin gray plug, C3-41 pin red plug, and C4-68 pin lt. gray plug.
Turn Signal(L) lt. blue/white (F), yellow (R) + BCM, C1, pin 38 and C3, pin A9
Notes: The BCM (Body Control Module) is part of the fuse/relay box on the front passenger side of the center console. It has the following connectors: C1-72 pin gray plug, C2-72 pin gray plug, C3-41 pin red plug, and C4-68 pin lt. gray plug.
Turn Signal(R) dk. blu/wht (F), dk. green (R) + BCM, C1, pin 56 and C3, pin A12
Notes: The BCM (Body Control Module) is part of the fuse/relay box on the front passenger side of the center console. It has the following connectors: C1-72 pin gray plug, C2-72 pin gray plug, C3-41 pin red plug, and C4-68 pin lt. gray plug.
Reverse Light lt. green + inside rearview mirror
Door Trigger gray/black (D), tan/white (P) - each kick or BCM, C1, pins 51 and 72
Notes: Use both wires and diode isolate each.
The BCM (Body Control Module) is part of the fuse/relay box on the front passenger side of the center console. It has the following connectors: C1-72 pin gray plug, C2-72 pin gray plug, C3-41 pin red plug, and C4-68 pin lt. gray plug.
Dome Supervision gray - BCM, C3, pin A10
Notes: The BCM (Body Control Module) is part of the fuse/relay box on the front passenger side of the center console. It has the following connectors: C1-72 pin gray plug, C2-72 pin gray plug, C3-41 pin red plug, and C4-68 pin lt. gray plug.
Trunk/Hatch Pin ORANGE / black - BCM, C1, pin 18
Notes: The BCM (Body Control Module) is part of the fuse/relay box on the front passenger side of the center console. It has the following connectors: C1-72 pin gray plug, C2-72 pin gray plug, C3-41 pin red plug, and C4-68 pin lt. gray plug.
Hood Pin pink/black - pin switch or BCM, C1, pin 69
Notes: The BCM (Body Control Module) is part of the fuse/relay box on the front passenger side of the center console. It has the following connectors: C1-72 pin gray plug, C2-72 pin gray plug, C3-41 pin red plug, and C4-68 pin lt. gray plug.
Trunk/Hatch Release BROWN / white - BCM, C1, pin 71
Notes: The BCM (Body Control Module) is part of the fuse/relay box on the front passenger side of the center console. It has the following connectors: C1-72 pin gray plug, C2-72 pin gray plug, C3-41 pin red plug, and C4-68 pin lt. gray plug.
The trunk release motor wire is tan/white (+) at the rear fuse block in the driver side of the trunk, black plug, pin F10.
Power Sliding Door N/A
Factory Alarm Arm factory remote only
Factory Alarm Disarm factory remote only
Disarm No Unlock with ignition and Passkey
Tachometer NOT pink ac any fuel injector
Wait to start N/A
Brake Wire white + BCM, C1, pin 42
Notes: The BCM (Body Control Module) is part of the fuse/relay box on the front passenger side of the center console. It has the following connectors: C1-72 pin gray plug, C2-72 pin gray plug, C3-41 pin red plug, and C4-68 pin lt. gray plug.
Parking Brake lt. blue - switch or BCM, C1, pin 59
Notes: The BCM (Body Control Module) is part of the fuse/relay box on the front passenger side of the center console. It has the following connectors: C1-72 pin gray plug, C2-72 pin gray plug, C3-41 pin red plug, and C4-68 pin lt. gray plug.
Horn Trigger tan - switch or BCM, C2, pin 14
Notes: The BCM (Body Control Module) is part of the fuse/relay box on the front passenger side of the center console. It has the following connectors: C1-72 pin gray plug, C2-72 pin gray plug, C3-41 pin red plug, and C4-68 pin lt. gray plug.
Memory Seat 1 N/A
Memory Seat 2 N/A
Memory Seat 3 N/A
Interface Module: Category:
Immobilizer Bypass Required:
Yes Type:
PASS-Key III+
Part #: 556UW
Alternate Part1 #: DesignTech 20402
Alternate Part2 #: DesignTech 29402
Notes: Standard on all models. In addition to the bypass module, you will also need to follow the interface information on DirectFax document 1603 using a 1300 ohm resistor.