Electric pickup, Work Truck (WT). No ignition switch.
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Which wires give constant, ignition and ground on a 2025 Chevrolet Silverado EV?
On a 2025 Chevrolet Silverado EV, take constant power from the battery distribution unit, on the 12V battery under the hood (wire color not published), ignition from the right instrument panel fuse block, empty slot F22DR (wire color not published), and ground to clean, bare body metal. Meter every wire first.
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 truck in front of you.
This page covers the 2025 Chevrolet Silverado EV Work Truck (WT).
This page is short. The truck is electric and has no ignition switch, so GM publishes a method for power and not an ignition wire. Constant power comes from a GM fuse kit at the 12V battery, and run power comes from a fuse tap in empty slot F22DR. The only wire colors GM prints are the six switched outputs on upfitter plug X79A, on trucks that have it. No turn, brake, reverse, door or CAN wire was found. Our own team has not yet metered these on a 2025 truck.
OBD-II portLocation not confirmed
Best power spotFuse tap in slot F22DR, right dash fuse block
System voltage12V accessory system, high voltage drive battery
Ignition typeElectric, no ignition switch
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Where do I get constant, ignition and ground on a 2025 Chevrolet Silverado EV?
GM gives a method for constant and run power. It does not give a wire color for either one.
Option 1 Constant and ignition
GM power provisions
Fuse kit at the 12V battery for constant. Fuse tap in slot F22DR for run power.
Constant
Fuse kit, color not published
Battery distribution unit, on the 12V battery under the hoodGM gives no wire color. Its method is fuse kit part number 84669070 with a small 60 amp fuse, fitted at the battery distribution unit. Disconnect the 12V negative cable first.
Ignition
Fuse tap
Right instrument panel fuse block, empty slot F22DRGM gives no wire color. Its method is a fuse tap in the empty F22DR slot, with a 10 amp or smaller fuse in both slots of the tap. Live in run mode.
Ground
Body ground
Body metal near the deviceClean, bare metal only. GM names no ground point for added equipment.
From GM. This truck has no ignition switch and GM publishes no ignition wire, so the fuse tap is the run source. The owner manual puts this fuse block behind the glove box, reached by taking off the hush panel under it. The upfitter guide says it is inside the glove compartment.
Option 2 Switched outputs
Upfitter plug X79A
Only on Work Trucks built with the upfitter accessory provision, GM option code VBP. Gray 8-way sealed plug.
Output 1
Yellow
Upfitter plug X79A, pin 1, circuit 10731Upfitter accessory 1 supply. Switched through a relay, 30 amp fuse.
Output 2
Blue
Upfitter plug X79A, pin 2, circuit 10732Upfitter accessory 2 supply. Switched through a relay, 30 amp fuse.
Output 3
Gray
Upfitter plug X79A, pin 3, circuit 10733Upfitter accessory 3 supply. Switched through a relay, 30 amp fuse.
Output 4
Red
Upfitter plug X79A, pin 4, circuit 10734Upfitter accessory 4 supply. Switched through a relay, 30 amp fuse.
Output 5
White
Upfitter plug X79A, pin 5, circuit 10735Upfitter accessory 5 supply. Switched through a relay, 30 amp fuse.
Output 6
Brown
Upfitter plug X79A, pin 6, circuit 11025Upfitter accessory 6 supply. Switched through a relay, 30 amp fuse.
From the plug table in the GM upfitter guides, the same in 2025 and 2026. These are switched outputs for added equipment. They are not a constant feed and not an ignition feed. Pins 7 and 8 are empty. GM does not say in text where this plug sits on the truck.
Power methods and plug colors from GM's Silverado EV WT upfitter guides for 2025 and 2026 and GM upfitter bulletin 200. Fuse block locations from the GM owner manual.
What are the turn signal, reverse and light wires on a 2025 Chevrolet Silverado EV?
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 lightNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
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. No lamp wire source was found for this truck.
Where are the brake, door, speed and CAN wires on a 2025 Chevrolet Silverado EV?
Circuit
Wire color
Location and what it does
BrakeNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
DoorsNot 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.
HazardNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
Trailer wiringNot foundNot yet checked
Not found
Not foundThe GM owner manual prints no pin list or wire colors for the trailer connector.
SeatbeltNot 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.
CAN busNot foundNot yet checked
Not found
Not foundNo CAN wire color or diagnostic port pin was found. GM says the modules on this truck check each other with serial data authentication, and that a tracker left on the diagnostic port may interfere with vehicle systems.
Sources: GM's Silverado EV WT upfitter guides for 2025 and 2026, GM upfitter bulletin 200 and the 2025 GM owner manual. No source gave a brake, door, parking brake, hazard, trailer, seatbelt, speed or CAN wire for this truck.
Which years share wiring with the 2025 Chevrolet Silverado EV?
This page2025Work Truck (WT). GM prints an upfitter guide for this year.
Same wiring2026The X79A plug table is the same in the 2025 and 2026 GM guides: same pins, colors and circuit numbers.
Not this page2024, other trims and the GMC Sierra EVGM bulletin 200 applies the fuse kit and fuse tap method to 2024 and newer Work Trucks, but no 2024 document prints the plug colors. Nothing we found covers the RST or LT trims or the Sierra EV. The gas Silverado 1500 is a different truck.
Where are the fuse boxes and ground points on a 2025 Chevrolet Silverado EV?
InteriorTwo fuse blocks in the dashLeft: driver side of the instrument panel, between the steering wheel and the door. Right: behind the glove box, reached by taking off the hush panel under it (four push pins). Slot F22DR in the right block is the empty slot GM uses for run power.
Under the hoodPassenger side of the underhood compartmentPress the clips on the sides and lift the cover. The 12V battery and its battery distribution unit are also under the hood.
Ground pointsClean body metalGM names no ground point for added equipment. Stay clear of every orange cable.
Fuse block locations from the 2025 GM owner manual. Fuse numbers changed between years on this truck, and no amp ratings were found, so read the fuse label on the truck before you use a slot. Do not tap the gateway, diagnostic link, body control or telematics fuses.
Where is the OBD-II port on a 2025 Chevrolet Silverado EV?
OBD II
Diagnostic portOBD-II port: location not confirmedLook under the driver side dash first, and send us a photo if you find it.
Common questions about 2025 Chevrolet Silverado EV wiring
Which years share wiring with the 2025 Chevrolet Silverado EV?
2026. The X79A plug table is the same in the 2025 and 2026 GM guides: same pins, colors and circuit numbers.
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