Which wires give constant, ignition and ground on a 2020 GMC Savana?
On a 2020 GMC Savana, take constant power from the Red/White wire at the white ignition switch plug at the key barrel, pin 3, ignition from the Pink wire at the white ignition switch plug at the key barrel, pin 2, and ground to clean, bare body metal. Meter every wire first.
Meter every wire before you tap it. Colors change with trim and build date.
OBD-II port:Under the dash, driver sideBest power spot:Ignition switch plugSystem voltage:12VIgnition type:Key start (this page)
Where do I get constant, ignition and ground on a 2020 GMC Savana?
Constant, ignition and accessory are on one plug at the key barrel.
Option 1 All the power
Ignition switch plug
At the key barrel, under the column cover. Fortin notes the plug may look different from its drawing.
Constant
Red/White
White ignition switch plug at the key barrel, pin 312V battery feed. Fortin rates this wire at 2 amps max, fine for a GPS unit, not for a camera system that draws more.
Ignition
Pink
White ignition switch plug at the key barrel, pin 2Hot with the key in run. Pin 5 is also Pink but it is a data wire, so go by the pin.
Accessory
Brown
White ignition switch plug at the key barrel, pin 4Accessory.
Ground
Body ground
Bare metal under the dashNo ground color printed. Never the battery negative post.
No starter wire is listed in this guide.
Option 2 Backup
Fuse tap
For loads over 2 amps.
Constant
Fuse tap
Interior fuse panelFor a feed over 2 amps, use a fuse tap instead of the plug wire.
Use an add-a-fuse.
From Fortin's install guide for the 2008 to 2023 Express and Savana with a key (guide 59251, which Fortin lists for every Savana year through 2026).
Where are the turn signal, reverse and light wires on a 2020 GMC Savana for advanced 360 multicam and video telematics installs?
Circuit
Wire color
Location and what it does
Left turnNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
Right turnNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
Park lightNegative -Not yet checked
Light Blue
White 25-pin plug on the body control module, pin 8Ground when the parking lights are on.
HeadlightNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
ReverseNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
Dome lightNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
Each chip shows the main insulation color with its stripe. Source: Fortin's install guide for the 2008 to 2023 Express and Savana with a key (guide 59251, which Fortin lists for every Savana year through 2026).
Where are the brake, door, speed and CAN wires on a 2020 GMC Savana for advanced 360 multicam and video telematics installs?
Circuit
Wire color
Location and what it does
CAN dataDataNot yet checked
Green (single wire)
White 5-pin transponder plug at the key barrel, pin 4Single-wire GM data bus. Never cut or splice it.
DoorsNegative -Not yet checked
Gray/Black
Pink 25-pin plug on the body control module, pin 10Driver door. Ground when the door is open.
BrakeNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
Parking brakeNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
Vehicle speedNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
Source: Fortin's install guide for the 2008 to 2023 Express and Savana with a key (guide 59251, which Fortin lists for every Savana year through 2026). Wires marked Not found were not in the guide.
Where are the fuse boxes and ground points on a 2020 GMC Savana?
DashBody control moduleParking light, driver door.
Ground pointsBare body metalNever the battery negative post.
Locations from Fortin's install guide.
Where is the OBD-II port on a 2020 GMC Savana?
OBD II
Diagnostic portOBD-II port: under the dash, driver sidePlug-in GPS trackers and OBD harnesses connect here. Check the port before you plan the install.
Which years share wiring with the 2020 GMC Savana?
Twin van2020 Chevrolet ExpressSame van under a different badge. Its page uses other sources.
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This page covers the 2020 GMC Savana full-size van with a key start.
The wire colors come from Fortin's install guide, read wire by wire. Our own team has not yet metered these on a 2020 Savana.
Written by API Signal, fleet GPS and camera installers for 35+ years across Georgia, South Carolina and North Carolina, installing every major telematics and camera brand. Every wire on this page lists its source.
Test every wire with a meter before you tap it
No wiring information is ever guaranteed. Colors and locations change with trim, options and build date, and the manufacturer can change them in the middle of a model year. We share this as a starting point for installers, and you are responsible for confirming every connection on the vehicle in front of you.
Common questions about 2020 GMC Savana wiring
What wire is constant power on a 2020 GMC Savana?
Red/White at the white ignition switch plug at the key barrel, pin 3. 12V battery feed. Meter it before you tap it.
What wire is ignition on a 2020 GMC Savana?
Pink at the white ignition switch plug at the key barrel, pin 2. Hot with the key in run. Meter it before you tap it.
Which years share wiring with the 2020 GMC Savana?
2013, 2014, 2015, 2016, 2017, 2018.... Fortin uses the same guide for these years.
Help build this page
Had the panels off on one of these? Show the next installer what you found.
No one has sent photos for the 2020 GMC Savana yet, so yours could be the first. Every photo, wire color and tip we use goes on this page with your name on it, and it saves the next installer time under the dash.
1. Snap it
The plugs, tap points, fuse boxes and ground points. Phone photos are fine.
2. Send it
Tap "Add yours" at the top of this page. Your tip and your photos go in the same box.
3. See your name on it
We check every tip, then post it here "Compliments of" you, by name.
Compliments of
The installers who helped build this page.
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Founding contributor spot: openThe first installer to confirm a wire or send photos for the 2020 GMC Savana gets their name here, and it stays here.
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Every tip we use gets a creditThe wire you checked is marked "Checked on a vehicle, compliments of" you.
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Your name, right on this page, for everyone who uses it to see. Add your tip and your photos in one box.
