air conditioning GMC SAVANA 2021 User Guide

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-14583543) -
2021 - crc - 7/10/20
Service and Maintenance 249
Because of the way people use vehicles,
maintenance needs vary. There may need to
be more frequent checks and services. The
Additional Required Services - Normal are for
vehicles that:
.Carry passengers and cargo within
recommended limits on the Tire and
Loading Information label. SeeVehicle
Load Limits 0131.
.Are driven on reasonable road surfaces
within legal driving limits.
.Use the recommended fuel. See
Recommended Fuel 0158.
Refer to the information in the Maintenance
Schedule Additional Required Services -
Normal chart.
The Additional Required Services - Severe are
for vehicles that are:
.Mainly driven in heavy city traffic in hot
weather
.Mainly driven in hilly or mountainous
terrain
.Frequently towing a trailer
.Used for high speed or competitive
driving
.Used for taxi, police, or delivery service Refer to the information in the Maintenance
Schedule Additional Required Services -
Severe chart.
{Warning
Performing maintenance work can be
dangerous and can cause serious injury.
Perform maintenance work only if the
required information, proper tools, and
equipment are available. If they are not,
see your dealer to have a trained
technician do the work. See
Doing Your
Own Service Work 0179.
Maintenance Schedule
Owner Checks and Services
Check the engine oil level. See Engine Oil
0 184.
Once a Month
.Check the tire inflation pressures,
including the spare. See Tire Pressure
0 216.
.Inspect the tires for wear. See Tire
Inspection 0220.
.Check the windshield washer fluid level.
See Washer Fluid 0196.
Engine Oil Change
When the CHANGE ENGINE OIL SOON
message displays, have the engine oil and
filter changed within the next 1 000 km
(600 mi). If driven under the best conditions,
the engine oil life system may not indicate
the need for vehicle service for up to a year.
The engine oil and filter must be changed at
least once a year and the oil life system
must be reset. Your trained dealer technician
can perform this work. If the engine oil life
system is reset accidentally, service the
vehicle within 5 000 km (3,000 mi) since the
last service. Reset the oil life system when
the oil is changed. See Engine Oil Life
System 0186.
Extended Idle Use
When the vehicle is used in a way that
requires extended idle time, one hour of use
shall be deemed the same as 53 km (33 mi).
See Driver Information Center (DIC) 081 for
hourmeter.
Air Conditioning Desiccant (Replace Every
Seven Years)
The air conditioning system requires
maintenance every seven years. This service
requires replacement of the desiccant to

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-14583543) -
2021 - crc - 7/10/20
250 Service and Maintenance
help the longevity and efficient operation of
the air conditioning system. This service can
be complex. See your dealer.
Tire Rotation and Required Services
Every 12 000 km (7,500 mi)
Rotate the tires, if recommended for the
vehicle, and perform the following services.
SeeTire Rotation 0220.
.Check engine oil level and oil
life percentage. If needed, change engine
oil and filter, and reset oil life system.
See Engine Oil 0184 and
Engine Oil Life System 0186.
.Check engine coolant level. See Cooling
System 0191.
.Check windshield washer fluid level. See
Washer Fluid 0196.
.Check tire inflation pressures, including
the spare. See Tire Pressure0216.
.Inspect tire wear. See Tire Inspection
0 220.
.Visually check for fluid leaks.
.Inspect engine air cleaner filter. See
Engine Air Cleaner/Filter 0189.
.Inspect brake system. See Exterior Care
0 241.
.Visually inspect steering, suspension, and
chassis components for damage, including
cracks or tears in the rubber boots, loose
or missing parts, or signs of wear at least
once a year. See Exterior Care0241.
.Inspect power steering for proper
attachment, connections, binding, leaks,
cracks, chafing, etc.
.Visually inspect halfshafts and drive
shafts for excessive wear, lubricant leaks,
and/or damage including: tube dents or
cracks, constant velocity joint or universal
joint looseness, cracked or missing boots,
loose or missing boot clamps, center
bearing excessive looseness, loose or
missing fasteners, and axle seal leaks.
.Check restraint system components. See
Safety System Check 035.
.Visually inspect fuel system for damage
or leaks.
.Visually inspect exhaust system and
nearby heat shields for loose or damaged
parts.
.Lubricate body components. See Exterior
Care 0241.
.Check starter switch. See Starter Switch
Check 0200.
.Check automatic transmission shift lock
control function. See Automatic
Transmission Shift Lock Control Function
Check 0201.
.Check ignition transmission lock. See
Ignition Transmission Lock Check 0201.
.Check parking brake and automatic
transmission park mechanism. See Park
Brake and P (Park) Mechanism Check
0 201.
.Check accelerator pedal for damage, high
effort, or binding. Replace if needed.
.Lubricate the steering linkage (greasable
joints). See Normal and Severe
Maintenance Schedules. For severe
commercial use vehicles, see Special
Application Services 0253.
.Visually inspect the spare tire to ensure
that it is tightly stowed under the vehicle.
Push, pull, and try to turn the tire. If the
spare tire moves, tighten as necessary.
See Tire Changing 0228.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-14583543) -
2021 - crc - 7/10/20
Service and Maintenance 251
Maintenance Schedule Additional
Required Services - Normal12 000 km/7,500 mi
24 000 km/15,000 mi
36 000 km/22,500 mi
48 000 km/30,000 mi 60 000 km/37,500 mi
72 000 km/45,000 mi84 000 km/52,500 mi
96 000 km/60,000 mi
108 000 km/67,500 mi 120 000 km/75,000 mi 132 000 km/82,500 mi
144 000 km/90,000 mi 156 000 km/97,500 mi
168 000 km/105,000 mi 180 000 km/112,500 mi
192 000 km/120,000 mi 204 000 km/127,500 mi 216 000 km/135,000 mi
228 000 km/142,500 mi
240 000 km/150,000 mi
Rotate tires and perform Required Services. Check engine oil
level and oil life percentage. Change engine oil and filter,
if needed.
Lubricate the steering linkage.@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @
Inspect evaporative control system. (1)@ @@
Replace engine air cleaner filter. (2)@@@
Replace spark plugs. Inspect spark plug wires and/or boots.@
Drain and fill engine cooling system. (3)@
Visually inspect accessory drive belts. (4)@
Replace brake fluid. (5)
Replace windshield wiper blades. (6)
@ @ @ @ @ @ @ @ @ @
Replace air conditioning desiccant. (7)
Footnotes—Maintenance Schedule
Additional Required Services - Normal
(1) Visually check all fuel and vapor lines
and hoses for proper attachment,
connection, routing, and condition. (2)
Or every four years, whichever comes
first. If driving in dusty conditions, inspect
the filter at each oil change or more often
as needed. See Engine Air Cleaner/Filter
0 189.
(3) Or every five years, whichever comes
first. See Cooling System 0191. (4)
Or every 10 years, whichever comes first.
Inspect for fraying, excessive cracking,
or damage; replace, if needed.
(5) Replace brake fluid every five years. See
Brake Fluid 0197.
(6) Or every 12 months, whichever comes
first. See Wiper Blade Replacement 0201.
(7) Replace air conditioning desiccant every
seven years.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-14583543) -
2021 - crc - 7/10/20
252 Service and Maintenance
Maintenance Schedule Additional
Required Services - Severe12 000 km/7,500 mi
24 000 km/15,000 mi
36 000 km/22,500 mi
48 000 km/30,000 mi 60 000 km/37,500 mi
72 000 km/45,000 mi84 000 km/52,500 mi
96 000 km/60,000 mi
108 000 km/67,500 mi 120 000 km/75,000 mi 132 000 km/82,500 mi
144 000 km/90,000 mi 156 000 km/97,500 mi
168 000 km/105,000 mi 180 000 km/112,500 mi
192 000 km/120,000 mi 204 000 km/127,500 mi 216 000 km/135,000 mi
228 000 km/142,500 mi
240 000 km/150,000 mi
Rotate tires and perform Required Services. Check engine oil
level and oil life percentage. Change engine oil and filter,
if needed.
Lubricate the steering linkage.@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @
Inspect evaporative control system. (1)@ @@
Replace engine air cleaner filter. (2)@@@
Change automatic transmission fluid and filter.@@@
Replace spark plugs. Inspect spark plug wires and/or boots.@
Drain and fill engine cooling system. (3)@
Visually inspect accessory drive belts. (4)@
Replace brake fluid. (5)
Replace windshield wiper blades. (6)
@ @ @ @ @ @ @ @ @ @
Replace air conditioning desiccant. (7)
Footnotes—Maintenance Schedule
Additional Required Services - Severe
(1) Visually check all fuel and vapor lines
and hoses for proper attachment,
connection, routing, and condition. (2)
Or every four years, whichever comes
first. If driving in dusty conditions, inspect
the filter at each oil change or more often
as needed. See Engine Air Cleaner/Filter
0 189.
(3) Or every five years, whichever comes
first. See Cooling System 0191. (4)
Or every 10 years, whichever comes first.
Inspect for fraying, excessive cracking,
or damage; replace, if needed.
(5) Replace brake fluid every five years. See
Brake Fluid 0197.
(6) Or every 12 months, whichever comes
first. See Wiper Blade Replacement 0201.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-14583543) -
2021 - crc - 7/10/20
Service and Maintenance 253
(7)Replace air conditioning desiccant every
seven years.
Special Application Services
.Vehicles with Dual Wheels: Check dual
wheel nut torque at 160, 1 600, and
10 000 km (100, 1,000, and 6,000 mi) of
driving. Repeat this service whenever a
tire/wheel is serviced or removed.
.Severe Commercial Use Vehicles Only:
Lubricate chassis components every oil
change.
.Have underbody flushing service
performed. See “Underbody Maintenance”
in Exterior Care 0241.
Additional Maintenance
and Care
Your vehicle is an important investment and
caring for it properly may help to avoid
future costly repairs. To maintain vehicle
performance, additional maintenance
services may be required.
It is recommended that your dealer perform
these services —their trained dealer
technicians know your vehicle best. Your
dealer can also perform a thorough assessment with a multi-point inspection to
recommend when your vehicle may need
attention.
The following list is intended to explain the
services and conditions to look for that may
indicate services are required.
Battery
The 12-volt battery supplies power to start
the engine and operate any additional
electrical accessories.
.To avoid break-down or failure to start
the vehicle, maintain a battery with full
cranking power.
.Trained dealer technicians have the
diagnostic equipment to test the battery
and ensure that the connections and
cables are corrosion-free.
Belts
.Belts may need replacing if they squeak
or show signs of cracking or splitting.
.Trained dealer technicians have access to
tools and equipment to inspect the belts
and recommend adjustment or
replacement when necessary.
Brakes
Brakes stop the vehicle and are crucial to
safe driving.
.Signs of brake wear may include chirping,
grinding, or squealing noises, or difficulty
stopping.
.Trained dealer technicians have access to
tools and equipment to inspect the brakes
and recommend quality parts engineered
for the vehicle.
Fluids
Proper fluid levels and approved fluids
protect the vehicle’s systems and
components. See Recommended Fluids and
Lubricants 0255 for GM approved fluids.
.Engine oil and windshield washer fluid
levels should be checked at every fuel fill.
.Instrument cluster lights may come on to
indicate that fluids may be low and need
to be filled.
Hoses
Hoses transport fluids and should be
regularly inspected to ensure that there are
no cracks or leaks. With a multi-point
inspection, your dealer can inspect the hoses
and advise if replacement is needed.
Lamps
Properly working headlamps, taillamps, and
brake lamps are important to see and be
seen on the road.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-14583543) -
2021 - crc - 7/10/20
Technical Data 259
ApplicationCapacities
Metric English
Air Conditioning Refrigerant R134a For the air conditioning system refrigerant charge amount, see the refrigerant label located under the hood. See your dealerfor more information.
Engine Cooling System without Rear Heat*
I4.3L V6 Engine 10.1 L 10.7 qt
I6.6L V8 Engine 11.9 L 12.6 qt
Engine Cooling System with Rear Heat* I4.3L V6 Engine 12.4 L 13.1 qt
I6.6L V8 Engine 14.2 L 15.0 qt
*Engine cooling system capacity values are based on the entire cooling system and its components.
Engine Oil with Filter I4.3L V6 Engine 5.7 L 6.0 qt
I6.6L V8 Engine 7.7 L 8.0 qt

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-14583543) -
2021 - crc - 7/10/20
Index 281
IndexA
Accessories and Modifications . . . . . . . . . . . .178
Accessory Power . . . . . . . . . . . . . . . . . . . . . . . . . .138
Add-On Electrical Equipment . . . . . . . . . . . . . 176
Additional InformationOnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
Additional Maintenance and Care . . . . . . . . 253
Agreements Trademarks and License . . . . . . . . . . . . . . . . 117
Air Cleaner/Filter, Engine . . . . . . . . . . . . . . . . 189
Air Conditioning . . . . . . . . . . . . . . . . . . . . . 119, 122
Air Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
How Does an Airbag Restrain? . . . . . . . . . . 41
What Makes an Airbag Inflate? . . . . . . . . . 40
What Will You See after an Airbag
Inflates? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
When Should an Airbag Inflate? . . . . . . . . 40
Where Are the Airbags? . . . . . . . . . . . . . . . . 38
Airbags Adding Equipment to the Vehicle . . . . . . . 45
Light On-Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
On-Off Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
On-Off Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Readiness Light . . . . . . . . . . . . . . . . . . . . . . . . . 74
Servicing Airbag-Equipped Vehicles . . . . . . 44
System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Alarm
Vehicle Security . . . . . . . . . . . . . . . . . . . . . . . . . 15
Alert Side Blind Zone (SBZA) . . . . . . . . . . . . . . . . . 155
All-Season Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
AM-FM Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101
Antenna Fixed Mast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Multi-band . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Antilock Brake System (ABS) . . . . . . . . . . . . . .145 Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
Interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
Ashtrays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Assistance Program, Roadside . . . . . . . . . . . . 265
Audio Theft-Deterrent Feature . . . . . . . . . . . . . . . . . 97
Audio Players CD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Automatic
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Headlamp System . . . . . . . . . . . . . . . . . . . . . . 91
Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Transmission Fluid . . . . . . . . . . . . . . . . 186, 189
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . 144
Shift Lock Control Function Check . . . . . . 201

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