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2018 Chevrolet Suburban LT, Stereo & Remote Start WiringPrinted From: the12volt.comForum 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=147048 Printed Date: May 01, 2025 at 3:07 AM Topic: 2018 Chevrolet Suburban LT, Stereo & Remote Start Wiring Posted By: jeremey1001 Subject: 2018 Chevrolet Suburban LT, Stereo & Remote Start Wiring Date Posted: September 21, 2021 at 11:27 AM I have one I'm working on and my avaliable information is limited. Anyone have the remote start and radio wiring info? It currently has a Bose 9 speaker system.
Replies: Posted By: mgoetz74 Date Posted: September 23, 2021 at 4:03 PM 2018 chevy suburban standard key
12 Volts Red/Violet (20A) + BCM under driver dash, blue 27 pin plug, pin 4 Second 12 Volts Red/Blue (2A) + Ignition Switch, black 6 pin plug, pin 4 Ground (chassis ground) Starter Kill Yellow + 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 Notes Second Accessory (same as second starter) + 6300 Ohms R Code White/Violet MUX Ignition Switch, black 6 pin plug, pin 5 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 High 2 Blue Data BCM under driver dash, white 26 pin plug, pin 25 CAN Bus Low 2 White Data BCM under driver dash, white 26 pin plug, pin 24 CAN Bus SW Green Data OBD-Data Link Connector, black 16 pin plug, pin 1 CAN Bus SW 2 Green Data BCM under driver dash, gray 26 pin plug, pin 23 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 OBD Connector Black Under Driver Dash, Next To Hood Release IMMO Data Green/Violet Data Immobilizer Control Module on ignition switch, violet 3 pin plug, pin 2 IMMO Data 2 Green/Violet (alternate location) Data BCM under driver dash, green 25 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 Passenger Unlock Motor Gray/Green Reverse BCM under driver dash, pink 27 pin plug, pin 2 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 - Green/Gray - Headlight Switch, black 12 pin plug, pin 5 Parking Lights NEG 2 Green/Gray (alternate location) - BCM under driver dash, white 26 pin plug, pin 22 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 Headlight 2 White/Violet (alternate location) - BCM under driver dash, white 26 pin plug, pin 16 AutoLights Green/Brown - (Off) Headlight Switch, black 12 pin plug, pin 3 AutoLights 2 Green/Brown (alternate location) - (Off) BCM under driver dash, white 26 pin plug, pin 11 Reverse Light Blue/Brown + BCM under driver dash, brown 26 pin plug, pin 26 Left Front Door Trigger Gray - Driver Door Latch, green 10 pin plug, pin 1 Right Front Door Trigger Gray - Passenger Door Latch, green 10 pin plug, pin 5 Left Rear Door Trigger Gray - Left Rear Window Switch, black 8 pin plug, pin 2 Right Rear Door Trigger Gray - Right Rear Window Switch, black 8 pin plug, pin 2 Dome Light Gray + BCM under driver dash, gray 26 pin plug, pin 1 Trunk/Hatch Pin Violet/Gray (w/o power liftgate) - BCM under driver dash, pink 27 pin plug, pin 5 TrunkHatch Pin2 Blue/Black (with power liftgate) - Liftgate Control Module in liftgate, black 16 pin plug, pin 5 Rear Glass Pin (same as trunk/hatch pin) Hood Pin Brown/Green - BCM under driver dash, black 26 pin plug, pin 24 Power Liftgate Gray/Black - Dash Junction Block left of brake pedal, blue 50 pin plug, pin 38 Trunk/Hatch Release Yellow/Blue (hatch); Gray/Green (glass) (rear handle switch) - BCM under driver dash, gray 26 pin plug, pin 14 (hatch); pink 27 pin plug, pin 15 (glass) Trunk Release Motor Green/Brown (hatch); Gray/Yellow (glass) + BCM under driver dash, brown 26 pin plug, pin 11 (hatch); black 26 pin plug, pin 8 (glass) Fuel Door Release (locks/unlocks with driver door) Tachometer Yellow/Violet (camshaft position sensor) AC ECM on driver side of engine, black/gray 73 pin plug, pin 33 (non HD); black 73 pin plug, pin 60 (HD) Fuel Pump Violet/Green (non HD); Gray and Gray (HD) + Underhood Fuse Box, white 58 pin plug, pin J5 (non HD); pins D2 and L7 (HD) Rear Defroster Brown/Violet + Latched Passenger Kick, gray 20 pin plug, pin 13 Mirror Defroster (same as rear defroster) Left Front Heated Seat (LIN) Right Front Heated Seat (LIN) 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 (w/o EPB) - BCM under driver dash, white 26 pin plug, pin 10 Horn Trigger Green/White - BCM under driver dash, green 25 pin plug, pin 18 Horn Trigger 2 Brown/White (alternate location) - BCM under driver dash, brown 26 pin plug, pin 19 Wipers Gray + BCM under driver dash, black 26 pin plug, pin 16 Left Front Window (Up/Down) (motor is part of module) Right Front Window (Up/Down) (motor is part of module) Left Rear Window (Up/Down) Blue/Violet - Yellow/Blue A Left Rear Window Switch, black 8 pin plug, pins 6 - 7 Right Rear Window (Up/Down) Blue/Gray - Green/Black A Right Rear Window Switch, black 8 pin plug, pins 6 - 7 Sun Roof (Open/Close) Green/White and Brown/Blue (open) (functions with ignition on only) Both - Sunroof Switch, black 8 pin plug, pins 6, 1 Sun Roof (Limit/Close) Blue/White and Brown/Blue (close) (functions with ignition on only) Both - Sunroof Switch, black 8 pin plug, pins 4, 1 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 Radio 12V Red/Violet + Radio, green 16 pin plug, pin 8 Radio Ground Black - Radio, green 16 pin plug, pin 16 Radio Ignition Violet/Yellow (retained accessory) + Dash Junction Block left of brake pedal, gray 50 pin plug, pin 50 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 in left rear quarter panel, black 8 pin plug, pins 3 - 7 Right Front Speaker - With Amp Yellow - Yellow/Black +,- Amplifier in left rear quarter panel, black 8 pin plug, pins 2 - 6 Left Front Tweeter - With Amp Yellow/Blue - Yellow/Gray +,- Amplifier in left rear quarter panel, black 16 pin plug, pins 5 - 13 Right Front Tweeter - With Amp Brown/Green - Violet/Brown +,- Amplifier in left rear quarter panel, black 16 pin plug, pins 4 - 12 Left Rear Speaker - With Amp Green - Green/Black +,- Amplifier in left rear quarter panel, black 16 pin plug, pins 7 - 15 Right Rear Speaker - With Amp White - Blue/Black +,- Amplifier in left rear quarter panel, black 16 pin plug, pins 6 - 14 Left Rear Surround - With Amp Yellow/Brown - White/Black +,- Amplifier in left rear quarter panel, black 16 pin plug, pins 3 - 11 Right Rear Surround - With Amp (parallel with left rear surround) Center Channel - With Amp Yellow/White - Blue/Yellow +,- Amplifier in left rear quarter panel, black 16 pin plug, pins 10 - 2 Subwoofer - With Amp Blue/Gray - Gray/Black +,- Amplifier in left rear quarter panel, 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-- HMI Control Module behind glove box, gray 12 pin plug, pins 5 - 6 RSE Video (+/-) (coaxial cable) 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 ------------- 33 years as a installer now just a retired old guy. Favorite thing to install/topic are remote starts/car alarms. Stop using test lights!!! Posted By: jeremey1001 Date Posted: September 26, 2021 at 10:02 AM Thank you. I appreciate it.
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