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GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-11374214) -
2018 - CRC - 2/2/18
Vehicle Care 243
Bulb Replacement
For the proper type of replacement
bulbs, or any bulb changing
procedure not listed in this section,
contact your dealer.
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.
Front Turn Signal,
Sidemarker, and Parking
Lamps
1. Front Parking and TurnSignal Lamp
2. Front Sidemarker Lamp
To replace the front turn signal,
sidemarker, and/or parking lamp
bulb(s):
1. Use a small tool to unlatch the outboard clip on the lamp by
pushing inboard and prying the
lamp assembly forward.
2. Remove the lamp from the grille.
3. Turn the bulb socket counterclockwise one-quarter
turn and remove it from the
lamp assembly.
4. Remove the bulb from the socket by pulling it straight out.
5. Replace the bulb.
6. Turn the bulb socket clockwise to reinstall it in the lamp
assembly.
7. Reinstall the lamp assembly into the grille until the outboard
clip snaps into place.
Taillamps
To replace a taillamp/turn signal
lamp or back-up lamp bulb:
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GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-11374214) -
2018 - CRC - 2/2/18
244 Vehicle Care
1. Remove the two inboard nutsfrom the inside of the taillamp
assembly.
2. The third nut (3) is under theapplique piece (2) above the
lamp. Remove the two inboard
applique nuts. Pull the
applique (2) straight rearward
slightly to clear the studs. Then
rotate the applique (2) just far
enough to gain access to the
outer push pins (1).
3. Carefully disconnect the push pins (1) from the applique
bracket.
4. Remove the third nut (3) from the upper outboard side of
the lamp.
5. Remove the taillamp assembly from the vehicle.
6. Remove the taillamp/turn signal
lamp (1) or back-up lamp (2)
bulb socket by turning it
counterclockwise one-quarter
turn and pulling it out of the
lamp assembly.
7. Remove the bulb by pulling it straight out.
8. Push the new bulb into the socket.
9. Reinstall the bulb socket by turning it clockwise into the
lamp assembly.
10. Reverse Steps 1–5 to reinstall the taillamp assembly and
applique.
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GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-11374214) -
2018 - CRC - 2/2/18
Vehicle Care 245
Center High-Mounted
Stoplamp (CHMSL)
The Center High-Mounted Stoplamp
(CHMSL) is above the rear doors at
the center of the vehicle.
To replace a bulb:
1. Remove the two screws fromthe CHMSL assembly.
2. Remove the CHMSL assembly.
3. Turn the bulb socket counterclockwise one-quarter
turn to remove it from the lamp
assembly. 4. Pull the old bulb straight out of
the socket and push the new
bulb into the socket.
5. Turn the bulb socket clockwise one-quarter turn to install it in
the lamp assembly.
6. Reinstall the CHMSL assembly and two screws.
Do not block or damage the CHMSL
when items are loaded on the roof
of the vehicle.
License Plate Lamp
1. Bulb Socket 2. License Plate Bulb
Assembly
3. Screws
To replace one of these bulbs:
1. Remove the screws (3) that secure the license plate bulb
assembly (2).
2. Turn the bulb socket (1) counterclockwise and pull the
bulb straight out of the socket.
3. Install the new bulb.
4. Reverse Steps 1 and 2 to reinstall the license plate bulb
assembly.
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GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-11374214) -
2018 - CRC - 2/2/18
Vehicle Care 247
Engine Compartment
Fuse Block
The fuse block is located in the
engine compartment on the driver
side of the vehicle.
Vehicles with upfitter content
See www.gmupfitter.com for upfitter
provisions and best practices.
Caution
Spilling liquid on any electrical
component on the vehicle may
damage it. Always keep the
covers on any electrical
component.
The vehicle may not be equipped
with all of the fuses, relays, and
features shown.Fuses Usage
1 ABS motor
2 ABS module
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GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-11374214) -
2018 - CRC - 2/2/18
250 Vehicle Care
RelaysUsage
15 Run/Crank
37 –
38 Fuel pump
39 Crank
40 A/C compressor
48 –
49 Powertrain
50 –
57 Cooling fan –low
60 Cooling fan control Auxiliary Fuse Block
This component is near the fuse
block in the engine compartment
Fuses Usage
MR-1 Upfitter 1
MR-2 Upfitter 2
MR-3 Upfitter power control Relays Usage
MR Rel 1 Upfitter 1
MR Rel 2 Upfitter 2
Mega Fuse Holder
Fuse Usage
1 Starter motor
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GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-11374214) -
2018 - CRC - 2/2/18
Vehicle Care 251
Floor Console Fuse Block
The floor console fuse block is under the driver seat.
The vehicle may not be equipped
with all of the fuses, relays, and
features shown.Mini-Fuse Usage
F1 –
F2 Steering wheel sensor
F3 Auxiliary parking lamps
F4 Front parking lamps
F5 Trailer parking lamps
F6 Upfitter/Parking lamps
F7 Right rear parking lamp
F8 Left rear parking lamp
F9 Exterior rear mirror switch/ Door
lock-unlock control
upfitter
F10 Airbag/Automatic occupant sensing
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GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-11374214) -
2018 - CRC - 2/2/18
252 Vehicle Care
Mini-Fuse UsageF11 –/ OnStar
F12 ECM batt
F13 HVAC 2
F14 HVAC 1
F15 –
F16 Upfitter 1
F17 Exterior rearview heated mirrors
F18 Rear window defogger
F19 Compass
F20 Radio/Chime/ SiriusXM satellite
radio
F21 Remote function actuator/Tire
pressure monitor
F22 Ignition switch/ Discrete logic
ignition sensor
F23 Instrument cluster
F24 – Mini-Fuse Usage
F25 HVAC control
F26 Auxiliary/Trailer reverse lamps
F27 Reverse lamps
F28 Upfitter 2/Reading lamps
F29 Rear blower
F30 Upfitter/Courtesy lamps
F31 Front door lock
F32 Rear door lock
F33 Cargo door unlock
F34 Passenger door unlock
F35 Rear passenger door unlock
F36 Driver door lock
F37 Empty
F38 – Relays Usage
K1 Run
K2 –
K3 Parking lamps
K4 Upfitter 2
K5 Rear defogger
K6 Retained accessory power
Circuit
Breaker Usage
CB1 Power seats
CB2 Power windows
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GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-11374214) -
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Vehicle Care 271
Vehicles that have a tire
pressure monitoring system
could give an inaccurate
low-pressure warning if non-TPC
Spec rated tires are installed.
SeeTire Pressure Monitor
System 0262.
The Tire and Loading
Information label indicates the
original equipment tires on the
vehicle. See Vehicle Load Limits
0 167 for the label location and
more information about the Tire
and Loading Information label.
Different Size Tires and
Wheels
If wheels or tires are installed that
are a different size than the original
equipment wheels and tires, vehicle
performance, including its braking,
ride and handling characteristics,
stability, and resistance to rollover
may be affected. If the vehicle has
electronic systems such as antilock
brakes, rollover airbags, traction
control, electronic stability control, or All-Wheel Drive, the performance
of these systems can also be
affected.
{Warning
If different sized wheels are used,
there may not be an acceptable
level of performance and safety if
tires not recommended for those
wheels are selected. This
increases the chance of a crash
and serious injury. Only use GM
specific wheel and tire systems
developed for the vehicle, and
have them properly installed by a
GM certified technician.
See Buying New Tires 0269 and
Accessories and Modifications
0 213.
Uniform Tire Quality
Grading
The following information relates
to the system developed by the
United States National Highway
Traffic Safety Administration (NHTSA), which grades tires by
treadwear, traction, and
temperature performance. This
applies only to vehicles sold in
the United States. The grades
are molded on the sidewalls of
most passenger car tires. The
Uniform Tire Quality Grading
(UTQG) system does not apply
to deep tread, winter tires,
compact spare tires, tires with
nominal rim diameters of
10 to 12 inches (25 to 30 cm),
or to some limited-production
tires.
While the tires available on
General Motors passenger cars
and light trucks may vary with
respect to these grades, they
must also conform to federal
safety requirements and
additional General Motors Tire
Performance Criteria (TPC)
standards.