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Wiring Database / Chevrolet / Impala / 2012

2012 Chevrolet Impala

Full-size sedan. Key start.

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Which wires give constant, ignition and ground on a 2012 Chevrolet Impala?

On a 2012 Chevrolet Impala, take constant power from the Red/White wire at the ignition switch harness, ignition from the Pink wire at the ignition switch harness, 6-pin plug, pin 3, 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 2012 Chevrolet Impala, the year the engine changed to the 3.6L V6.

This car has a standard key. The colors come from one wire sheet that covers 2009 to 2013. Our own team has not yet metered these on this car.

OBD-II portLocation not confirmed
Best power spotIgnition switch harness
System voltage12V
Ignition typeKey

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Where do I get constant, ignition and ground on a 2012 Chevrolet Impala?

Take constant, ignition and ground from the same area.

Option 1 Easiest

Ignition switch harness

Steering column. Key start on every year of this body.

Constant
Red/White
Ignition switch harnessAlways hot.
Ignition
Pink
Ignition switch harness, 6-pin plug, pin 3Hot in run.
Ground
Body ground
Body metal under the dashClean, bare metal only. Never the battery negative post. No source named a factory ground point under the dash.
Accessory
Brown
Ignition switch harness, 6-pin plug, pin 4Hot in accessory and run.
There is no starter wire at the ignition switch on this car. The White wire in this plug is immobilizer data: leave it alone.
Option 2 More wires

BCM under the driver dash

Left of the steering column.

Constant
Red/White
BCM left of the steering column, black 25-pin plug, pins 1 to 4Always hot. Four Red/White wires, 10A or 15A each.
Ignition
Pink
BCM, light green plug, pin 14Hot in run.
Ground
Body ground
Body metal under the dashClean, bare metal only. Never the battery negative post. No source named a factory ground point under the dash.
Accessory
Brown
BCM, light green plug, pin 21Hot in accessory and run.
BCM plug and pin numbers from the 2009 to 2013 sheet.

Colors from a 2009 to 2013 Impala wire sheet on the12volt.

What are the turn signal, reverse and light wires on a 2012 Chevrolet Impala?

Circuit
Wire color
Location and what it does
Left turnNot foundNot yet checked
Not found
Not foundThe 2009 to 2013 sheet does not list turn signals. The 2006 colors are on the 2006 page.
Right turnNot foundNot yet checked
Not found
Not foundThe 2009 to 2013 sheet does not list turn signals.
Park lightNegative -Not yet checked
Brown/White
BCM left of the steering column, white plug, pin 8Park light switch wire, grounds with the lights on. The same wire is on the 2006 and 2007 sheets.
HeadlightNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
ReverseNot foundNot yet checked
Not found
Not foundNot on the 2009 to 2013 sheet. On 2006 and 2007 cars it is Light Green at the BCM pink plug, pin 2, so meter that pin.
Dome lightPositive +Not yet checked
Gray/Black
Driver kick panel, or BCM pink plug, pin 1Dome light supervision.

Each chip shows the main insulation color with its stripe. Source: a 2009 to 2013 Impala wire sheet on the12volt.

Where are the brake, door, speed and CAN wires on a 2012 Chevrolet Impala?

Circuit
Wire color
Location and what it does
BrakePositive +Not yet checked
Light Blue
BCM left of the steering column, brown plug, pin 5Hot with the pedal pressed.
DoorsNegative -Not yet checked
Tan
BCM, gray plug, pin 23One wire for all doors; grounds with any door open.
Parking brakeNot foundNot yet checked
Not found
Not foundNot on the 2009 to 2013 sheet. On 2006 and 2007 cars it is Orange/Black at the BCM pink plug, pin 22, so meter that pin.
HazardNot foundNot yet checked
Not found
Not foundNot on the 2009 to 2013 sheet.
Lock / unlockNegative -Not yet checked
Pink/Black (lock)
Orange/Black (unlock)
BCM, gray plug, pins 12 and 11Lock and unlock inputs.
Trunk releaseNegative -Not yet checked
Light Blue
BCM, white plug, pin 10Grounds to release the trunk.
SeatbeltNot foundNot yet checked
Not found
Not foundWe found no source for this wire.
Vehicle speedAC signalNot yet checked
Yellow
Transmission control unit, black 49-pin plug, pin 41From one 2012 owner post. Earlier cars use Brown at the ABS module, so meter it.
TachAC signalNot yet checked
Any uncommon wire at one injector
Fuel injectors in the engine bayUse the wire that differs from injector to injector, not the shared feed.
CAN busNot foundNot yet checked
Not found
Not foundNo source gave the data wire colors or pins for this car.

Sources: a 2009 to 2013 Impala wire sheet on the12volt and owner posts for the speed wire (installer-reported). Turn signals, headlight, reverse, hazard, parking brake, seatbelt and the data bus wires were not found.

Which years share wiring with the 2012 Chevrolet Impala?

This page2012Covered by the 2009 to 2013 wire sheet.
Same wiring2009, 2010, 2011 and 2013One wire sheet covers 2009 to 2013. The engine changed for 2012, and the speed wire moved with it.
Not this page2008 and older or the Impala LimitedSame body. Older cars list a different BCM constant plug.

Where are the fuse boxes and ground points on a 2012 Chevrolet Impala?

InteriorFront passenger footwell, behind a coverAuxiliary outlets fuse F7 (20A), retained accessory power F3 (10A).
Under the hoodRight side of the engine bayAuxiliary power fuse (25A) and BCM fuse (10A).
Ground pointsClean body metalNo named ground point found. Never use the battery negative post.

Fuse list from fuse guides for 2006 to 2013. Check the lid label before you use a slot.

Where is the OBD-II port on a 2012 Chevrolet Impala?

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 2012 Chevrolet Impala wiring

What wire is constant power on a 2012 Chevrolet Impala?

Red/White at the ignition switch harness. Always hot. Meter it before you tap it.

What wire is ignition on a 2012 Chevrolet Impala?

Pink at the ignition switch harness, 6-pin plug, pin 3. Hot in run. Meter it before you tap it.

Where is the brake wire on a 2012 Chevrolet Impala?

Light Blue (positive +) at the BCM left of the steering column, brown plug, pin 5. Hot with the pedal pressed. Meter it before you tap it.

Where is the vehicle speed signal on a 2012 Chevrolet Impala?

Yellow at the transmission control unit, black 49-pin plug, pin 41. From one 2012 owner post. Meter it before you tap it.

Which years share wiring with the 2012 Chevrolet Impala?

2009, 2010, 2011 and 2013. One wire sheet covers 2009 to 2013.

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