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Vehicle Wiring Details for your
2003 -2006 Chevrolet Silverado Wiring Diagram
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Listed below is the vehicle specific wiring diagram for your car alarm, remote starter or keyless entry installation into your 2003 -2006 Chevrolet Silverado . This information outlines the wires location, color and polarity to help you identify the proper connection spots in the vehicle. Please be sure to test all of your wires with a digital multimeter before making any connections. More information on using a multimeter and testing wires please see our Technical Support Area.

 PART   COLOR  LOCATION
 12 VOLT CONSTANT   RED (+)   IGNITION SWITCH HARNESS
 STARTER  YELLOW (+)  IGNITION SWITCH HARNESS
 STARTER 2  N/A  
 IGNITION 1  PINK (+)  IGNITION SWITCH HARNESS
 IGNITION 2  WHITE (+) See NOTE *6  IGNITION SWITCH HARNESS
 IGNITION 3  N/A  
 ACCESSORY/HEATER BLOWER 1  ORANGE (+)  IGNITION SWITCH HARNESS
 ACCESSORY/HEATER BLOWER 2  N/A  
 KEYSENSE  N/A  
 PARKING LIGHTS ( - )  GRAY/BLACK (-)  @ BCM, BROWN or TAN Plug, Pin B2, See NOTE *1
 PARKING LIGHTS ( + )  N/A  
 POWER LOCK  See NOTE *4  
 POWER UNLOCK  See NOTE *4  
 DOOR TRIGGER  GRAY/BLACK (-) and BLACK/WHITE (-) Use both, See NOTE *2  @ DOOR MODULE in each Front DOOR
 DOMELIGHT SUPERVISION  GRAY/BLACK (-) See NOTE *8, Requires #R30-H Relay  @ DRIVERS DOOR MODULE in DOOR
 TRUNK RELEASE  N/A  
 SLIDING POWER DOOR  N/A  
 HORN  BLACK/YELLOW (-)  @ Comming from the TOP of the Steering Column
 TACH  WHITE, See NOTE *7  @ PCM, GREEN plug, Pin 10, See NOTE *3
 WAIT TO START LIGHT  See NOTE *5  
 BRAKE  WHITE (+)  @ SWITCH ABOVE BRAKE PEDAL
 FACTORY ALARM DISARM   LIGHT GREEN (-)  @ DRIVER DOOR MODULE in DRIVERS DOOR.
 ANTI-THEFT  YELLOW (+), BLACK (-) and RED/WHITE (Not Used)  GM's PASSLOCK 2 System, wires are in Ignition Switch Harness
 EXTRA INFORMATION
 NOTE *1 The BCM (Body Control Module) is located JUST below the Steering Column of the vehicle, the BCM has (3)Plugs facing the cab of the vehicle. The (3) Plugs are WHITE, BROWN or TAN and LIGHT BLUE. The 4th Plug, a PURPLE is located on the Back of the BCM. NOTE *2 On BASE model vehicles the DOOR Triggers are at the BCM in a LIGHT BLUE Plug, the DRIVER DOOR is a GRAY/BLACK (-) Pin B4, the PASSENGER DOOR is a BLACK/WHITE (-) Pin A5. On all other trucks these wires are in each DOOR MODULE in each door. On the 4-door the DRIVERS rear door is LIGHT BLUE/BLACK (-) Pin A3, the PASSENGERS rear door is a LIGHT GREEN/BLACK (-) Pin A2 in the PURPLE Plug. When connecting to an ALARM SYSTEM, you must DIODE ISOLATE these wires, See DAIGRAM NOTE *3 The PCM (Powertrain Control Module) is located in the LEFT FRONT of the engine compartment to the left of the fan shroud. NOTE *4 This vehicle will Requires a Anti-Theft Bypass Module Part GMDL-BP to connect the Door Locks and Bypass the PASSLOCK 2 System.If not connecting doorlocks you can use a gmbp or #791 bypass. NOTE *5 when hooking up a REMOTE STARTER on a DIESEL, if the WAIT to START wire from the Remote Starter does not wait until the Light on the dash turn out before cranking, you will need to program in the 5,10 or 15 Second WAIT to START TIMMER in the Installation Manual. On some vehicles the Wait to Start Light on the dash is not a true (+)Positive or (-)Negative and the wire from the Remote Starter will not owrk. When this Wait to Start Timmer is programmed, disconnect and tape up the Wait to Start wire from the Remote Starter that is tied into the Wait to Start Light on the dash. NOTE *6 IMPORTANT !!!!! this wire MUST BE CONNECTED as IGNITION #2 for REMOTE STARTING!!!!!! NOTE *7 On DIESEL ENGINES the TACH is WHITE in the BLACK Bottom plug, Pin 37 on the HYBRID the TACH is in a GREEN Plug, Pin 35 NOTE *8 On the 2006 the DOME LIGHT wire is a DARK BLUE/WHITE (-) C4 of the BCM, Pin B9


 
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