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2020 GMC Terrain Owners Manual - Bulb Replacement



Bulb Replacement

For the proper type of replacement bulbs, or any bulb changing procedure not listed in this section, contact your dealer.

Caution

Do not replace incandescent bulbs with aftermarket LED replacement bulbs. This can cause damage to the vehicle electrical system.

Halogen Bulbs

Warning
Halogen bulbs have pressurized gas inside and can burst if you drop or scratch the bulb. You or others could be injured. Be sure to read and follow the instructions on the bulb package.

High Intensity Discharge (HID) Lighting

Warning
The High Intensity Discharge (HID) lighting system operates at a very high voltage. If you try to service any of the system components, you could be seriously injured. Have your dealer or a qualified technician service them.

After an HID headlamp bulb has been replaced, the beam might be a slightly different shade than it was originally. This is normal.

LED Lighting
This vehicle has several LED lamps. For replacement of any LED lighting assembly, contact your dealer.

Front Turn Signal Lamps

To replace one of these bulbs:

1. Open the hood. See Hood

2. Remove the bulb access cap from the top of the headlamp assembly by turning it counterclockwise.

3. Remove the bulb from the bulb socket by pinching the tabs on either side of the bulb and pull straight out.
4. Install the new bulb in the bulb socket.
5. Install the bulb access cap onto the headlamp assembly by turning clockwise.

Taillamps

To replace one of these lamps:

1. Open the liftgate.

2. Remove the two screw caps and two screws from the taillamp assembly.
3. Pull the taillamp assembly out of the vehicle body.
4. Disconnect the lamp wiring harness.

5. Turn the bulb socket counterclockwise and pull it out.
6. Pull the bulb straight out of the socket.
7. Push the replacement bulb straight into the bulb socket.
8. Push the bulb socket in and turn it clockwise.
9. Reverse Steps 2–5 to reinstall the lamp assembly.

License Plate Lamp

Lamp Assembly

Bulb Assembly

  1. Bulb Socket
  2. Bulb
  3. Lamp Assembly

To replace one of these bulbs:

  1. Open the liftgate partway. See Liftgate 0 21.
  2. Push the lamp assembly outboard to remove.
  3. Pull the lamp assembly down to remove it from the liftgate.
  4. Turn the bulb socket (1) counterclockwise to remove it from the lamp assembly (3).
  5. Pull the bulb (2) straight out of the bulb socket (1).
  6. Push the replacement bulb straight into the bulb socket and turn the bulb socket clockwise to install it into the lamp assembly.
  7. Push the lamp assembly into the liftgate engaging the clip side first.
  8. Push on the lamp side opposite the clip until the lamp assembly snaps into place.