AUX GMC SAVANA 2021 User Guide

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-14583543) -
2021 - crc - 7/10/20
122 Climate Controls
Rear Climate Control System
If equipped with a rear heating and air conditioning system, it controls the temperature, fan
speed, and air delivery for the rear seat passengers only. The front climate control panel is in
the overhead console between the driver and front passenger.
Front Climate Control Panel
1. Fan Control
2. Air Delivery Mode Control
3. Temperature Control
Use this control panel to maintain a
separate temperature setting. Adjust the
direction of the airflow or adjust the fan
speed for the rear seat passenger(s). When the fan knob is in the AUX position,
the rear climate control panel can be used
to adjust the climate settings in the rear
seating area.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-14583543) -
2021 - crc - 7/10/20
Climate Controls 123
Rear Climate Control Panel
1. Fan Control
2. Air Delivery Mode Control
3. Temperature Control
For vehicles with a rear climate control
panel, it is located overhead behind the
driver and front passenger, centered in front
of the second row. To adjust the rear
climate control panel settings by a rear seat
passenger, the front climate control panel
fan knob must be in the AUX position. The
fan speed, air delivery mode, and
temperature can then be adjusted. AUX :
Turn the fan knob on the front
climate control panel to AUX to let rear seat
passengers use the control panel in the rear
seating area. This disables the front control
panel. To return control to the front panel,
move the fan knob out of AUX.
9: Turns the system off.
9:Turn clockwise or counterclockwise to
increase or decrease the fan speed in the
rear seating area.
Temperature Control : Turn clockwise or
counterclockwise to increase or decrease the
temperature in the rear seating area. The air conditioning system on the main
climate control panel must be turned on to
direct cooled air to the rear of the vehicle.
If it is not on, then the temperature in the
rear of the vehicle remains at cabin
temperature.
Air Delivery Mode Control :
Turn clockwise
or counterclockwise to change the direction
of the airflow in the rear seating area.
To change the current mode, select one of
the following:
H: Air is directed to the upper outlets,
with some directed to the floor outlets.
2: Air is directed to the floor outlets.
Be sure to keep the area under the front
seats clear of any objects so that the air
inside of the vehicle can circulate effectively.
For information on how to use the main
climate control system, see Climate Control
Systems 0119. For information on
ventilation, see Air Vents0123.
Air Vents
Use the outlets located near the center and
on the sides of the instrument panel to
change the direction of airflow.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-14583543) -
2021 - crc - 7/10/20
138 Driving and Operating
Fast Idle System
If equipped, this feature is available only
with cruise control. The manual fast idle
switch is operated using the cruise control
buttons on the left side of the steering
wheel.
This system can be used to increase engine
idle speed whenever the following
conditions are met:
.The parking brake is set.
.The brake pedal is not pressed.
.The vehicle must not be moving and the
accelerator must not be pressed.
To control the fast idle:
.To enable the Fast Idle System, press and
release the cruise control on/off button
and ensure that the switch indicator light
is lit.
.Press and release the cruise control SET-
button. Engine speed will be held at
approximately 1200 rpm.
When the fast idle is active, the Driver
Information Center (DIC) will display FAST
IDLE ON.
One of the following actions will turn off
the fast idle:
.Pressing the brake.
.Selecting the cruise control cancel button.
.Releasing the parking brake.
.Moving the transmission shift lever out of
P (Park) or N (Neutral).
.Selecting the cruise control on/off button
when it was previously on.
.Pressing the cruise control SET- button a
second time.
.Pressing the accelerator more than
one-quarter of the way down.
.Turning the ignition off.
Retained Accessory Power (RAP)
When the ignition is turned from on to off,
the following features (if equipped) will
continue to function for up to 10 minutes,
or until the driver door is opened. These
features will also work when the ignition is
in RUN or ACC/ACCESSORY:
.Infotainment System
.Power Windows (during RAP this
functionality will be lost when any door
is opened)
.Sunroof (during RAP this functionality will
be lost when any door is opened)
.Auxiliary Power Outlet
.Audio System
.OnStar System
Engine Coolant Heater
If the vehicle has a diesel engine, see the
Duramax diesel supplement.
{Warning
Do not plug in the engine block heater
while the vehicle is parked in a garage or
under a carport. Property damage or
personal injury may result. Always park
the vehicle in a clear open area away
from buildings or structures.
The engine coolant heater can provide easier
starting and better fuel economy during
engine warm-up in cold weather conditions
at or below −18 °C (0 °F). Vehicles with an
engine coolant heater should be plugged in
at least four hours before starting.
An internal thermostat in the plug end of
the cord may exist which will prevent
engine coolant heater operation at
temperatures above −18 °C (0 °F).
To Use the Engine Coolant Heater
1. Turn off the engine.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-14583543) -
2021 - crc - 7/10/20
Vehicle Care 207
FusesUsage
1 ABS motor
2 ABS module
3 Right trailer stoplamp/ Turn signal lamp
4 –
5 –
6 Fuel system control module/Ignition
7 Body control module 5
8 Body control module 7
9 Body control module 4
10 Instrument cluster 11 Trailer wiring
12 –
13 Interior rear vision camera module
14 Windshield washer
16 Horn 17 Transmission
18 A/C Fuses
Usage
19 Engine control module battery
20 Left stop/turn cutaway lamp
21 Left stop/turn trailer lamp
22 Right stop/turn cutaway lamp
23 NOX Sensor (Diesel only)
24 Fuel pump 25 Auxiliary power outlet
26 Body control module 3 27 Special equipment option
28 Airbag
29 Steering wheel sensor
30 Engine control module ignition
31 Transmission control module Ignition
32 Transmission control module 1 battery Fuses
Usage
33 Rear parking aid module
34 NOX Sensor (Diesel only)
35 Fuel heater control module (Diesel only)
36 Fuel system control module battery
41 Transmission control module 2, battery
signal
42 Trailer wiring
43 Electro viscous fan clutch (Diesel only)
44 Starter solenoid 45 Engine control module, powertrain signal 2
46 DC-AC inverter 47 –
51 Left high-beam headlamp
52 Right high-beam headlamp

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-14583543) -
2021 - crc - 7/10/20
208 Vehicle Care
FusesUsage
53 Left low-beam headlamp
54 Right low-beam headlamp
55 Wipers
56 Canister vent solenoid
58 Body control module 2
59 Body control module 1 61 Engine oil solenoid/ Crankcase vent heater
(Diesel only)
62 O2 sensor 2
63 –
64 Mass airflow/ Canister vent
65 Ignition coils/injectors - odd
66 Daytime running lamps 2
67 Daytime running lamps 1
68 Auxiliary stoplamps Fuses
Usage
69 External power for trailer
70 Upfitter stoplamps 71 Fuel heater/FlexFuel sensor
72 Body control module 6
73 Lighter/Data link connector
74 Front blower 75 Engine control module
76 Soot sensors (Diesel only)
77 O2 sensor 1
78 Engine control module/ Powertrain signal 1
79 Ignition coils/injectors - even
Relays Usage
15 Run/Crank
37 NOX Sensor (Diesel only) Relays
Usage
38 Fuel pump
39 Crank
40 A/C compressor 48 Electro viscous fan clutch (Diesel only)
49 Powertrain 50 –
57 –
60 –
Auxiliary Fuse Block

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-14583543) -
2021 - crc - 7/10/20
210 Vehicle Care
Mini-FusesUsage
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/Front camera
module
F10 Airbag/Automatic occupant sensing
F11 –/OnStar
F12 –
F13 HVAC 2
F14 HVAC 1 F15 Reflected LED display
F16 Upfitter aux 1/Gas ambulance Mini-Fuses
Usage
F17 Heated outside 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 –
F25 HVAC control
F26 Auxiliary/Trailer reverse lamps
F27 Reverse tail lamps
F28 Upfitter 2/Reading lamps/Ambulance
F29 Rear blower
F30 Upfitter/Courtesy lamps F31 Front door lock
F32 Rear door lock Mini-Fuses
Usage
F33 Cargo door unlock
F34 Front passenger door unlock
F35 Rear passenger door unlock
F36 Driver door unlock F37 –
F38 –
Relays Usage
K1 Run
K2 –
K3 Parking lamps
K4 Upfitter 2 K5 Rear window defogger
K6 Retained accessory power
Circuit Breakers Usage CB1 Power seats
CB2 Power windows

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-14583543) -
2021 - crc - 7/10/20
282 Index
AuxiliaryDevices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Avoiding Untrusted Media Devices . . . . . . . 104
Axle, Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
B
Battery Exterior Lighting Battery Saver . . . . . . . . . 95
Load Management . . . . . . . . . . . . . . . . . . . . . . 94
Power Protection . . . . . . . . . . . . . . . . . . . . . . . 95
Battery - North America . . . . . . . . . . . . 198, 236
Blade Replacement, Wiper . . . . . . . . . . . . . . . 201
Bluetooth Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Brake System Warning Light . . . . . . . . . . . . . . . . . . 77
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Antilock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Parking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Break-In, New Vehicle . . . . . . . . . . . . . . . . . . . . .134
Bulb Replacement Center High-Mounted Stoplamp(CHMSL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
Front Turn Signal, Sidemarker, and Parking Lamps . . . . . . . . . . . . . . . . . . . . . . . 202 Bulb Replacement (cont'd)
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . 202
Headlamp Aiming . . . . . . . . . . . . . . . . . . . . . . 202
Headlamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
License Plate Lamps . . . . . . . . . . . . . . . . . . . 204
Taillamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Buying New Tires . . . . . . . . . . . . . . . . . . . . . . . . 222
C
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
California Perchlorate Materials Requirements . . . 178
California Proposition 65 Warning . . . . . . . . . . . . . . . . . . .178, 198, 236, Back Cover
Camera Rear Vision (RVC) . . . . . . . . . . . . . . . . . . . . . . 152
Canadian Vehicle Owners . . . . . . . . . . . . . . . . . . . 1
Capacities and Specifications . . . . . . . . . . . . . 258
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . 141
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . . 130
Cargo Tie-Downs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Cargo Door Relocking . . . . . . . . . . . . . . . . . . . . . . 11
Caution, Danger, and Warning . . . . . . . . . . . . . .2
CD Player . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104 Center High-Mounted Stoplamp
(CHMSL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
Chains, Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Charging System Light . . . . . . . . . . . . . . . . . . . . 76
Check Engine Light (Malfunction Indicator) . . . . 76
Ignition Transmission Lock . . . . . . . . . . . . . 201
Child Restraints Infants and Young Children . . . . . . . . . . . . . 47
Lower Anchors and Tethers forChildren . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Older Children . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Securing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58, 60
Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Cigarette Lighter . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Circuit Breakers . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Cleaning Exterior Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
Interior Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
Climate Control Systems . . . . . . . . . . . . . . . . . . 119 Air Conditioning . . . . . . . . . . . . . . . . . . . . . . . . 119
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Rear Heating System . . . . . . . . . . . . . . . . . . . 121
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Cluster, Instrument . . . . . . . . . . . . . . . . . . . . . . . . 71
Collision Damage Repair . . . . . . . . . . . . . . . . . 268

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-14583543) -
2021 - crc - 7/10/20
Index 283
CompartmentsStorage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Connected Services Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 279
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
Connections Connected Services . . . . . . . . . . . . . . . . . . . . 279
Control Traction and Electronic Stability . . . . . . . 147
Control of a Vehicle . . . . . . . . . . . . . . . . . . . . . . 127
Convex Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Coolant Engine Temperature Gauge . . . . . . . . . . . . . 73
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119, 122
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Courtesy Transportation Program . . . . . . . . 267
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Customer Assistance . . . . . . . . . . . . . . . . . . . . . 264
Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
Text Telephone (TTY) Users . . . . . . . . . . . . 264
Customer Information Publications Ordering Information . . . . . 269
Customer Satisfaction Procedure . . . . . . . . . 262
Cybersecurity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271D
Damage Repair, Collision . . . . . . . . . . . . . . . . . 268
Danger, Warning, and Caution . . . . . . . . . . . . . .2
Data Collection Infotainment System . . . . . . . . . . . . . . . . . . 272
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
Data Recorders, Event . . . . . . . . . . . . . . . . . . . 272
Daytime Running Lamps (DRL) . . . . . . . . . . . . .91
Defensive Driving . . . . . . . . . . . . . . . . . . . . . . . . 126
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Devices Auxiliary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Diagnostics Connected Services . . . . . . . . . . . . . . . . . . . . 280
Distracted Driving . . . . . . . . . . . . . . . . . . . . . . . . 126
Dome Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Door Cargo Door Relocking . . . . . . . . . . . . . . . . . . . . 11
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . . 12
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Power Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Rear Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Sliding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Drive Belt Routing, Engine . . . . . . . . . . . . . . . 261
Driver Assistance Systems . . . . . . . . . . . . . . . 150
Driver Information Center (DIC) . . . . . . . . . . . .81 Driving
Better Fuel Economy . . . . . . . . . . . . . . . . . . . 126
Characteristics and Towing Tips . . . . . . . . 160
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Hill and Mountain Roads . . . . . . . . . . . . . . 129
If the Vehicle is Stuck . . . . . . . . . . . . . . . . . . 131
Impaired . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . 128
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . 128
Vehicle Load Limits . . . . . . . . . . . . . . . . . . . . . 131
Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
E
Electrical Equipment, Add-On . . . . . . . . . . . . 176
Electrical SystemEngine Compartment Fuse Block . . . . . . . 206
Floor Console Fuse Block . . . . . . . . . . . . . . . 209
Fuses and Circuit Breakers . . . . . . . . . . . . . 205
Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Emergency
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . . . . . . 189
Check Light (Malfunction Indicator) . . . . . 76
Compartment Overview . . . . . . . . . . . . . . . . 180
Coolant Heater . . . . . . . . . . . . . . . . . . . . . . . . 138
Coolant Temperature Gauge . . . . . . . . . . . . 73