Page 248 of 364

Black plate (28,1)GMC Terrain/Terrain Denali Owner Manual - 2013 - crc 1st edition - 5/8/12
10-28 Vehicle Care
Fog Lamps
To replace one of these bulbs:
1. Locate the fog lamp assemblyunder the front fascia.
2. Disconnect the bulb socket from the electrical connector, turn,
and pull out the bulb assembly.
3. Remove the old bulb from the bulb socket and push the new
bulb straight into the bulb socket
until it connects. 4. Push the bulb socket into the fog
lamp assembly and turn
clockwise to lock it into place.
5. Reconnect the bulb socket to the electrical connector.
Taillamps, Turn Signal,
Sidemarker, Stoplamps,
and Back-Up Lamps
1. Stop/Tail/Turn Signal/Sidemarker Lamp
2. Auxiliary Taillamp
3. Back-up Lamp
Stop/Tail/Turn Signal/
Sidemarker Lamp
To replace one of these lamps:
1. Open the liftgate. See Liftgate
on page 2‑8.
2. Remove the two screw covers from the taillamp assembly.
3. Remove the two screwssecuring the taillamp assembly.
4. Pull the taillamp assembly out of the vehicle body.
5. Disconnect the lamp wiring harness.
Page 249 of 364
Black plate (29,1)GMC Terrain/Terrain Denali Owner Manual - 2013 - crc 1st edition - 5/8/12
Vehicle Care 10-29
6. Turn the bulb socketcounterclockwise and pull it out.
7. Pull the bulb straight out of the socket.
8. Install the new bulb.
9. Push the bulb socket in and turn it clockwise.
10. Reverse Steps 2–5 to reinstall the lamp assembly.11. Verify that the taillampassembly tab, located at the
bottom of the taillamp
assembly, is aligned to the
fascia bracket before securing
with screws.
Auxiliary Taillamp
To replace one of these lamps:
1. Open the liftgate. See Liftgate
on page 2‑8.
2. Remove the interior trim access panel.
3. Remove the five attachment
nuts (1) securing the taillamp
assembly to the liftgate.
4. Disengage the retaining hook (2) and pull the taillamp assembly
out of the vehicle liftgate.
5. Disconnect the lamp wiring harness.
Page 251 of 364

Black plate (31,1)GMC Terrain/Terrain Denali Owner Manual - 2013 - crc 1st edition - 5/8/12
Vehicle Care 10-31
Bulb Assembly
1. Bulb Socket
2. Bulb
3. Lamp Assembly
To replace one of these bulbs:
1. Open the liftgate partway. See Liftgate on page 2‑8.
2. Push the left end of the lamp assembly toward the right.
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.
Replacement Bulbs
Exterior Lamp Bulb
Number
Auxiliary Taillamp 161
Back-Up Lamp 921
Fog Lamp H11 LL
Headlamp
High Beam 9005LL
Headlamp
Low Beam H11 LL
License Plate Lamp W5WLL
Parking Lamp/Turn
Signal Front 7444NA
Sidemarker Front 194
Taillamp/Turn Signal
Lamp/Stop Lamp/
Sidemarker 3057K RD
For replacement bulbs not listed
here, contact your dealer.
Page 257 of 364
Black plate (37,1)GMC Terrain/Terrain Denali Owner Manual - 2013 - crc 1st edition - 5/8/12
Vehicle Care 10-37
Mini Fuses Usage13 Auxiliary Power Front
14 Heater, Ventilation and Air Conditioning
Ignition
15 Display
16 Body Control Module 5
17 Auxiliary Power Rear
18 Instrument Panel Cluster Ignition
19 Universal Garage Door Opener
20 Body Control Module 6
21 Spare
22 Sensing and Diagnostic Module
Ignition
23 Front Camera Mini Fuses Usage
24 Spare
25 Transmission Gear Shift Position
Indicator
26 Spare
27 Spare
28 Spare
30 Body Control Module 3
31 Amplifier
32 Discrete Logic Ignition Switch
33 Communications Integration Module
34 Body Control Module 2
35 Sensing and Diagnostic Module
Battery
36 Data Link Connection Mini Fuses Usage
37 Instrument Panel Cluster Battery
38 Passenger Sensing System Module
39 Spare
J-Case Fuses Usage
29 Front Blower Motor
40 Body Control Module 8
Relays Usage 41 Logistic Relay (If Equipped)
42 Retained Accessory Power Relay