2003-2006 Gmc Sierra Vehicle Wiring Chart and Diagram

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 Plug, Pin B2, See NOTE #2
PARKING LIGHTS ( + )	BROWN (+)	IN DRIVERS KICK PANEL
POWER LOCK	See NOTE #1
POWER UNLOCK	See NOTE #1
DOOR TRIGGER	GRAY/BLACK (-) DRIVERS and BLACK/WHITE (-) PASSENGER, Use both, See NOTE #3	@ EACH DOOR MODULE in EACH DOOR
DOMELIGHT SUPERVISION	GRAY/BLACK (-)	@ BCM, BLACK Plug PIN F, See NOTE #2
TRUNK RELEASE	N/A
SLIDING POWER DOOR	N/A
HORN	BLACK/YELLOW to BLACK (-)	@ STEERING COLUMN HARNESS
TACH	WHITE (AC)	@ PCM, GREEN PLUG PIN 36, See NOTE #4
WAIT TO START LIGHT	DARK BLUE (-), See NOTE #5	@ PCM, See NOTE #4
BRAKE	WHITE (+)	@ SWITCH ABOVE BRAKE PEDAL
FACTORY ALARM DISARM	LIGHT GREEN (-)	IN DRIVERS DOOR MODULE in DRIVERS DOOR
ANTI-THEFT	YELLOW (+), BLACK (-) and RED/WHITE (Not Used)	GM's PASSLOCK 2 System, these wires exit the Ignition Switch Tumbler together and are in the Main Ignition Switch Harness in the Column.

EXTRA INFORMATION

NOTE #1: THIS VEHICLE REQUIRES A SPECIAL INTERFACE BYPASS MODULE TO REMOTE START and do KEYLESS ENTRY, PART # DB-ALL or XK09, TO ORDER PLEASE GO TO THE INTERFACE BYPASS MODULE PAGE ON THIS WEBSITE. IF YOU ARE NOT DOING KEYLESS ENTRY YOU CAN USE THE 791 BYPASS MODULE. NOTE #2: The BCM (Body Control Module) is located UNDER the drivers side of dash. The unit has (6) plugs on it with the PUPRLE Plug on the back of the unit. NOTE #3: on the BASE model trucks the wires are in the LIGHT BLUE PLUG at the BCM, PINS B4 and B5. On the 4 door trucks the DRIVERS REAR door is a LIGHT BLUE/BLACK (-) PIN A3 and the PASSENGERS REAR DOOR is a LIGHT GREEN/BLACK (-) PIN A2 these wires are in the the PURPLE PLUG at the BCM. NOTE #4: The PCM (Powertrain Control Module) is located in the LEFT FRONT of the engine compartment to the left of the fan shroud. On DIESELS the TACH wire is at the BLACK PLUG, PIN 55 and on the hybrid models the tach wire is in a GREEN PLUG PIN 35 NOTE #5: when hooking up a remote starter, if you cannot get the (+) or (-) Wait to Start wire on the Remote Starter to work properly, you will then need to disconnect this wire and Program the Remote Starter for the 5, 10, 15 or 20 Second Wait to Start Timmer in the Installation manual. NOTE #6: IMPORTANT !!!!! this wire MUST BE CONNECTED as IGNITION #2 for REMOTE STARTING!!!!!!