2018 Chevrolet Silverado, Alarm, Remote Start, Stereo Wiring
Printed From: the12volt.com
Forum Name: Vehicle Wiring Information & File Requests
Forum Discription: Request Car Alarm, Car Stereo, Cruise Control, Remote Starter, Navigation, Mobile Video, and Other Vehicle Specific Wiring Info, Manuals, Tech Tips
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=145351
Printed Date: May 11, 2025 at 7:50 AM
Topic: 2018 Chevrolet Silverado, Alarm, Remote Start, Stereo Wiring
Posted By: merks18
Subject: 2018 Chevrolet Silverado, Alarm, Remote Start, Stereo Wiring
Date Posted: April 10, 2019 at 1:46 PM
Hey fellas, anyone have the wiring information for a 2018 Chevy Silverado? Thanks in advance...
Merks
Replies:
Posted By: motosaki
Date Posted: April 10, 2019 at 2:33 PM
12 Volts Red/Violet (20A) + BCM under driver dash, blue 27 pin plug, pin 4
Second 12 Volts Red/Blue (2A only) + Ignition Switch, black 6 pin plug, pin 4
Ground (chassis ground)
Starter Kill Yellow + Starter Motor --or-- Underhood Fuse Box, green 58 pin plug, pin E2
Second Starter White/Violet (R Code) (see Tech Doc 1605) + 9600 Ohms Ignition Switch, black 6 pin plug, pin 5
Ignition Violet/Black + Ignition Switch, black 6 pin plug, pin 2
Accessory Violet/Yellow + Ignition Switch, black 6 pin plug, pin 3
Second Accessory (same as second starter) + 6300 Ohms
Keysense (same as second starter)
CAN Bus High Blue Data OBD-Data Link Connector, black 16 pin plug, pin 6
CAN Bus Low White Data OBD-Data Link Connector, black 16 pin plug, pin 14
CAN Bus SW Lt. Green Data OBD-Data Link Connector, black 16 pin plug, pin 1
OBD 12 Volts Red/White (10A) + OBD-Data Link Connector, black 16 pin plug, pin 16
OBD Ground Black - OBD-Data Link Connector, black 16 pin plug, pin 4
IMMO Data Green/Violet Data Immobilizer Control Module on ignition switch, violet 3 pin plug, pin 2
Power Lock Brown/Yellow - BCM under driver dash, blue 27 pin plug, pin 19
Power Unlock Brown/White - BCM under driver dash, blue 27 pin plug, pin 15
Lock Motor Brown/Yellow Reverse BCM under driver dash, pink 27 pin plug, pin 4
Driver Unlock Motor Blue/White Reverse BCM under driver dash, pink 27 pin plug, pin 1
Factory Alarm Arm (factory remote only)
Factory Alarm Disarm (transponder and ignition)
Parking Lights Violet/Gray (L); Gray/Brown (R) + Underhood Fuse Box, brown 58 pin plug, pin G1 (L); pin F1 (R)
Parking Lights - Lt. Green/Gray - Headlight Switch, black 12 pin plug, pin 5
Hazards Green/White - BCM under driver dash, blue 27 pin plug, pin 26
Turn Signal (Left) Blue/White (LF); Yellow/Blue (LR) + BCM under driver dash, brown 26 pin plug, pin 2 (LF); pin 1 (LR)
Turn Signal (Right) Green/Violet (RF); Brown/Green (RR) + BCM under driver dash, black 26 pin plug, pin 3 (RF); pin 4 (RR
)
Headlight White/Violet - Headlight Switch, black 12 pin plug, pin 1
AutoLights Lt. Green/Brown - (Off) Headlight Switch, black 12 pin plug, pin 3
Reverse Light Blue/Brown + BCM under driver dash, brown 26 pin plug, pin 26
Left Front Door Trigger Gray (with power window) - Driver Window Motor, black 7 pin plug, pin 6
Left Front Door Trigger 2 Gray (w/o power window) - BCM under driver dash, gray 26 pin plug, pin 25
Right Front Door Trigger Gray (with power window) - Passenger Window Switch, black 8 pin plug, pin 8
Right Front Door Trigger 2 Gray (w/o power window) - BCM under driver dash, gray 26 pin plug, pin 14
Left Rear Door Trigger Gray/White - Left Rear Window Switch, black 8 pin plug, pin 2
Right Rear Door Trigger Gray/White - Right Rear Window Switch, black 8 pin plug, pin 2
Dome Light Gray + BCM under driver dash, gray 26 pin plug, pin 1
Hood Pin Brown/Green - BCM under driver dash, black 26 pin plug, pin 24
Tachometer Brown, Green, White/Green, or Yellow/Gray (fuel injectors 1, 3, 5, 7) AC Rear Top Center of Engine, black 12 pin plug, pin 5, 7, 8, or 9
Wait to Start Green/Brown - Instrument Cluster, black 32 pin plug, pin 32
Clutch Pedal Yellow MUX Clutch Switch, black 3 pin plug, pin B
Fuel Pump Violet/Green (light duty); Gray (heavy duty) + Underhood Fuse Box, white 58 pin plug, pin J5 (light duty); pin D2 (heavy duty)
Rear Defroster Brown/Violet + Latched Passenger Kick, gray 10 pin plug, pin 4
Mirror Defroster (same as rear defroster)
Left Front Heated Seat (LIN Bus
)
Right Front Heated Seat (LIN Bus)
Speed Sense Green/Gray AC Dash Junction Block left of brake pedal, gray 50 pin plug, pin 47
Brake Wire Violet/White + BCM under driver dash, black 26 pin plug, pin 11
Parking Brake Blue/Violet - BCM under driver dash, white 26 pin plug, pin 10
Horn Trigger Brown/White - BCM under driver dash, brown 26 pin plug, pin 19
Wipers Gray + BCM under driver dash, black 26 pin plug, pin 16
Memory Seat 1 White - 630 Ohms Driver Kick, door harness, gray 41 pin plug, pin 8
Memory Seat 2 (same as memory seat 1) - 2000 Ohms
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15yrs. in the industry. everything from simple deck installs, to remote starters, and full custom audio systems. I've Installed it all.
Posted By: merks18
Date Posted: April 10, 2019 at 3:16 PM
Motosaki, you are the man.....Any possibilty of getting the stereo info as well? Thanks in advance
Posted By: i am an idiot
Date Posted: April 10, 2019 at 4:35 PM
What are you trying to do?
Posted By: motosaki
Date Posted: April 10, 2019 at 4:48 PM
Radio 12V Red/Violet + Radio, green 16 pin plug, pin 8 or gray 20 pin plug, pin 11
Radio Ground Black - Radio, green 16 pin plug, pin 16 or gray 20 pin plug, pin 1
Radio Ignition (Low Speed GMLAN)
Radio Illumination (Low Speed GMLAN)
Factory Amp Turn-on (MOST Serial Data)
Left Front Speaker (+/-) Blue - Brown/Blue +,- Radio, green 16 pin plug, pins 1 - 9
Right Front Speaker (+/-) Yellow - Yellow/Black +,- Radio, green 16 pin plug, pins 2 - 10
Left Rear Speaker (+/-) Green - Green/Black +,- Radio, green 16 pin plug, pins 3 - 11
Right Rear Speaker (+/-) White - Blue/Black +,- Radio, green 16 pin plug, pins 4 - 12
Left Front Speaker - With Amp Blue - Brown/Blue +,- Amplifier behind rear seats, black 8 pin plug, pins 3 - 7
Right Front Speaker - With Amp Yellow - Yellow/Black +,- Amplifier behind rear seats, black 8 pin plug, pins 2 - 6
Left Front Tweeter - With Amp Yellow/Blue - Yellow/Gray (premium audio) +,- Amplifier behind rear seats, black 16 pin plug, pins 5 - 13
Right Front Tweeter - With Amp Brown/Green - Violet/Brown (premium audio) +,- Amplifier behind rear seats, black 16 pin plug, pins 4 - 12
Left Rear Speaker - With Amp Green - Green/Black +,- Amplifier behind rear seats, black 16 pin plug, pins 7 - 15
Right Rear Speaker - With Amp White - Blue/Black +,- Amplifier behind rear seats, black 16 pin plug, pins 6 - 14
Subwoofer - With Amp Blue/Gray - Gray/Black +,- Amplifier behind rear seats, black 8 pin plug, pins 1 - 5
Aux. Audio Input Left (+/-) Gray - Violet +,- Radio, gray 20 pin plug, pins 9 - 8
Aux. Audio Input Right (+/-) Green - Violet +,- Radio, gray 20 pin plug, pins 10 - 8
Rearview Camera Video Gray/Yellow - White/Blue +,- Radio, gray 20 pin plug, pins 5 - 4 or 15 - 14
RSE Video (+/-) (digital video)
RSE Audio Left (+/-) Green/White - Blue/Violet (headphone audio) +,- Media Disc Player, gray 20 pin plug, pins 1 - 3
RSE Audio Right (+/-) Brown/Gray - Blue/Violet (headphone audio) +,- Media Disc Player, gray 20 pin plug, pins 2 - 3
There you go man hope this helps!
-------------
15yrs. in the industry. everything from simple deck installs, to remote starters, and full custom audio systems. I've Installed it all.
Posted By: merks18
Date Posted: April 12, 2019 at 3:43 PM
Thanks brotha....Doing semi-blown system, just trying to keep all stock wiring as close to possible.
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