Used for: Headlight Bulb High Beam and Low Beam
Used for: Headlight Bulb Low Beam
Used for: Daytime Running Light Bulb
Used for: License Plate Light Bulb, Map Light Bulb
Used for: License Plate Light Bulb, Map Light Bulb
Used for: Parking Light Bulb, Glove Box Light Bulb, Trunk or Cargo Area Light
Used for: Parking Light Bulb, Glove Box Light Bulb, Trunk or Cargo Area Light
Used for: Side Marker Light Bulb Front
Used for: Turn Signal Light Bulb Front
Used for: Automatic Transmission Indicator Light Bulb
Used for: Courtesy Light Bulb
Used for: Dome Light Bulb
Used for: Vanity Mirror Light Bulb
This 2012 GMC Acadia bulb size guide is designed to help you quickly verify the correct bulb for each lighting position on your vehicle. Instead of guessing by shape or wattage, you can match the bulb size to the specific location, such as the headlight, tail light, license plate light, or interior lamp.
Because lighting equipment can vary by trim, market, and body style, the best way to use this page is to compare the bulb chart with the exact lamp you are replacing. That makes it easier to order the right replacement the first time and avoid returns or installation delays.
For the 2012 GMC Acadia, fitment can differ depending on trim package and whether the vehicle uses halogen or HID-style headlamp equipment, so always confirm the bulb type for your specific setup before buying. If you are considering an aftermarket LED conversion, make sure the bulb is compatible with the housing and that the beam pattern, polarity, and any required resistors or adapters are addressed. Even when a chart lists a bulb size, it is smart to remove the installed bulb and compare it before purchase, especially for exterior lights and any position that may have been changed by a previous owner.
The low beam headlight bulb listed for the 2012 GMC Acadia is H11 on many setups. Some vehicles may have different headlamp equipment depending on trim or lighting package, so confirm the installed bulb before ordering.
The chart shows D1S for the headlight bulb high beam and low beam position on certain versions of the 2012 GMC Acadia. Because headlight systems can vary, check your existing bulb and housing type before replacement.
The front turn signal light bulb is listed as 12272NA. This is one of the locations where trim and market differences can matter, so verify the bulb in the vehicle if you are unsure.
The rear turn signal light bulb is listed as LED on the 2012 GMC Acadia bulb chart. If you are replacing an LED assembly or module, confirm whether the issue is the bulb, the socket, or the entire lamp unit.
The license plate light bulb is listed as 168 or 917. These are common small wedge-style bulbs used in plate lamps and other interior locations.
The map light bulb is listed as 168 or 917. If your Acadia has multiple overhead or console lamps, check each socket because some interior positions may use different bulb types.
The parking light bulb is listed as 194 or 7441. This size is also used in several other small exterior and interior lighting positions on the vehicle.
The glove box light bulb is listed as 194 or 7441. If the glove box lamp is out, it is a good idea to inspect the socket and switch as well as the bulb.
The dome light bulb is listed as 212-2. Interior dome lamps can be sensitive to bulb length and base style, so compare the old bulb before replacing it.
The daytime running light bulb is listed as 3157. If one DRL is out, check both sides and inspect the connector, since heat and age can affect the socket over time.
The front side marker light bulb is listed as 194NA. This is a specific fitment, so make sure you use the correct base style rather than a standard 194 if your lamp requires the NA version.
Yes, many owners upgrade selected bulbs to LED, but fitment depends on the lamp location and housing design. Check for compatibility with the socket, beam pattern, and any electrical issues such as flicker or warning messages.
Checking the installed bulb is the safest way to confirm fitment because the 2012 GMC Acadia can have trim, package, and market differences. A quick visual check helps avoid ordering the wrong bulb size for a specific position.
