2020 CHEVROLET TAHOE engine coolant

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13566622) - 2020 - CRC - 4/15/19
Service and Maintenance 383
Maintenance
Schedule
Owner Checks and Services
At Each Fuel Stop
.Check the engine oil level. See
Engine Oil 0293.
Once a Month
. Check the tire inflation
pressures, including the spare.
See Tire Pressure 0337.
. Inspect the tires for wear. See
Tire Inspection 0344.
. Check the windshield washer
fluid level. See Washer Fluid
0 306.
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 0295.
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)
(Base Level) 0145 or
Driver Information Center (DIC)
(Uplevel) 0147 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 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. See Tire
Rotation 0344.
. Check engine oil level and oil
life percentage. If needed,
change engine oil and filter, and
reset oil life system. See Engine
Oil 0293 and
Engine Oil Life System 0295.
. Check engine coolant level. See
Cooling System 0301.
. Check windshield washer fluid
level. See Washer Fluid 0306.
. Check tire inflation pressures,
including the spare. See Tire
Pressure 0337.
. Inspect tire wear. See Tire
Inspection 0344.
. Visually check for fluid leaks.
. Inspect engine air cleaner filter.
See Engine Air Cleaner/Filter
0 300.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13566622) - 2020 - CRC - 4/15/19
392 Service and Maintenance
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
Fluids and lubricants identified below by name, part number, or specification can be obtained from your dealer.Usage Fluid/Lubricant
Automatic Transmission (6-Speed Transmission) DEXRON-VI Automatic Transmission Fluid.
Automatic Transmission (10-Speed Transmission) DEXRON ULV Automatic Transmission Fluid (GM Part No. 19352619, in
Canada 19352620).
Chassis Lubrication Chassis Lubricant (GM Part No. 12377985, in Canada 88901242) or lubricant meeting requirements of NLGI #2, Category LB or GC-LB.
Engine Coolant 50/50 mixture of clean, drinkable water and use only DEX-COOL Coolant. SeeCooling System 0301.
Engine Oil Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. See Engine Oil
0 293.
Front Axle (Four-Wheel Drive) SAE 75W-90 Synthetic Axle Lubricant (GM Part No. 88900401, in Canada 89021678).
Front Axle Propshaft Spline or One-Piece Propshaft Spline (Two-Wheel Drive) Spline Lubricant, Special Lubricant (GM Part No. 19257121, in
Canada 19257122).
Hydraulic Brake System DOT 3 Hydraulic Brake Fluid (GM Part No. 19353126, in Canada 19353127).

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-13566622) - 2020 - CRC - 4/24/19
Index 427
ChargingWireless . . . . . . . . . . . . . . . . . . . . . . 123
Charging System Light . . . . . . . . . 137
Check Engine Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . 137
Ignition Transmission Lock . . . .311
Child Restraints Infants and Young Children . . . . . 89
Lower Anchors and Tethersfor Children . . . . . . . . . . . . . . . . . . . 94
Older Children . . . . . . . . . . . . . . . . . . 87
Securing . . . . . . . . . . . . 104, 106, 107
Systems . . . . . . . . . . . . . . . . . . . . . . . . 91
Child-View Mirror . . . . . . . . . . . . . . . . 40
Circuit Breakers . . . . . . . . . . . . . . . . 319
Cleaning Exterior Care . . . . . . . . . . . . . . . . . 371
Interior Care . . . . . . . . . . . . . . . . . . 376
Climate Control Systems Dual Automatic . . . . . . . . . . . . . . . 178
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Cluster, Instrument . . . . . . . . . . . . . 127
Collision Damage Repair . . . . . . . 407
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . .110
Compass . . . . . . . . . . . . . . . . . . . . . . . 120 Connected Services
Connections . . . . . . . . . . . . . . . . . . 423
Diagnostics . . . . . . . . . . . . . . . . . . . 424
Navigation . . . . . . . . . . . . . . . . . . . . 422
Connections Connected Services . . . . . . . . . . 423
Control
Hill Descent . . . . . . . . . . . . . . . . . . 231
Traction and ElectronicStability . . . . . . . . . . . . . . . . . . . . . 229
Control Light
Hill Descent . . . . . . . . . . . . . . . . . . 141
Control of a Vehicle . . . . . . . . . . . . . 189
Convenience Net . . . . . . . . . . . . . . . 113
Convex Mirrors . . . . . . . . . . . . . . . . . . 36
Coolant Engine Temperature Gauge . . 134
Cooling . . . . . . . . . . . . . . . . . . . . 178, 182
Cooling System . . . . . . . . . . . . . . . . . 301
Courtesy Transportation Program . . . . . . . . . . . . . . . . . . . . . . . 406
Cruise Control . . . . . . . . . . . . . . . . . . 232 Light . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Cruise Control, Adaptive . . . . . . . . 235
Cupholders . . . . . . . . . . . . . . . . . . . . . 110
Customer Assistance . . . . . . . . . . . 403 Offices . . . . . . . . . . . . . . . . . . . . . . . . 402 Text Telephone (TTY)
Users . . . . . . . . . . . . . . . . . . . . . . . 403
Customer Information Publications OrderingInformation . . . . . . . . . . . . . . . . . . 409
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . . . 400
Cybersecurity . . . . . . . . . . . . . . . . . . . 412
D
Damage Repair, Collision . . . . . . . 407
Danger, Warning, and Caution . . . . 2
Data Collection Infotainment System . . . . . . . . . . 413
OnStar . . . . . . . . . . . . . . . . . . . . . . . 413
Data Recorders, Event . . . . . . . . . 412
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . 170
Defensive Driving . . . . . . . . . . . . . . . 188
Delayed Locking . . . . . . . . . . . . . . . . . 25
Diagnostics Connected Services . . . . . . . . . . 424
Distracted Driving . . . . . . . . . . . . . . . 187
Dome Lamps . . . . . . . . . . . . . . . . . . . 173
Door Ajar Light . . . . . . . . . . . . . . . . . . . . . 144
Delayed Locking . . . . . . . . . . . . . . . . 25
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-13566622) - 2020 - CRC - 4/24/19
428 Index
Power Locks . . . . . . . . . . . . . . . . . . . . 25
Drive Belt Routing, Engine . . . . . . 399
Driver Assistance Systems . . . . . 243
Driver Information
Center (DIC) . . . . . . . . . . . . . 145, 147
Driving Assistance Systems . . . . . . . . . . 248
Better Fuel Economy . . . . . . . . . 187
Characteristics and
Towing Tips . . . . . . . . . . . . . . . . . 262
Defensive . . . . . . . . . . . . . . . . . . . . . 188
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 188
Hill and Mountain Roads . . . . . . 196
If the Vehicle is Stuck . . . . . . . . . 198
Loss of Control . . . . . . . . . . . . . . . 190
Off-Road . . . . . . . . . . . . . . . . . . . . . 191
Off-Road Recovery . . . . . . . . . . . 190
Vehicle Load Limits . . . . . . . . . . . 200
Wet Roads . . . . . . . . . . . . . . . . . . . 196
Winter . . . . . . . . . . . . . . . . . . . . . . . . 197
Dual Automatic Climate
Control System . . . . . . . . . . . . . . . . 178
E
E85 or FlexFuel . . . . . . . . . . . . . . . . 258
Electrical Equipment,Add-On . . . . . . . . . . . . . . . . . . . . . . . 282 Electrical System
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 320
Fuses and Circuit Breakers . . . 319
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . 324, 327
Overload . . . . . . . . . . . . . . . . . . . . . 319
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 329
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . 415
Engine Air Cleaner/Filter . . . . . . . . . . . . . 300
Check Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . 137
Compartment Overview . . . . . . . 288
Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . 134
Cooling System . . . . . . . . . . . . . . . 301
Drive Belt Routing . . . . . . . . . . . . 399
Exhaust . . . . . . . . . . . . . . . . . . . . . . 215
Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . 306
Heater . . . . . . . . . . . . . . . . . . . . . . . . .211
Oil Life System . . . . . . . . . . . . . . . 295
Oil Pressure Gauge . . . . . . . . . . 133
Overheating . . . . . . . . . . . . . . . . . . 305
Power Messages . . . . . . . . . . . . . 154
Running While Parked . . . . . . . . 216 Starting . . . . . . . . . . . . . . . . . . . . . . . 209
Entry Lighting . . . . . . . . . . . . . . . . . . . 174
Equipment, Towing . . . . . . . . . . . . . 272
Event Data Recorders . . . . . . . . . . 412
Exit Lighting . . . . . . . . . . . . . . . . . . . . 175
Extended Parking . . . . . . . . . . . . . . . 214
Extender, Seat Belt . . . . . . . . . . . . . . 72
Exterior Lamp Controls . . . . . . . . . 167
Exterior Lamps Off Reminder . . . 169
Exterior Lighting Battery Saver . . . . . . . . . . . . . . . . . . . . . . . . . 176
F
Fan
Engine . . . . . . . . . . . . . . . . . . . . . . . . 306
Filter, Engine Air Cleaner . . . . . . . . . . . 300
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 170
Flashers, Hazard Warning . . . . . . 171
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 351 Changing . . . . . . . . . . . . . . . . . . . . . 353
FlexFuel E85 . . . . . . . . . . . . . . . . . . . . . . . . . . . 258
Floor Console Storage . . . . . . . . . . 113
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 379
Fluid AutomaticTransmission . . . . . . . . . . . 296, 299

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-13566622) - 2020 - CRC - 4/24/19
Index 429
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 308
Four-Wheel DriveTransfer Case . . . . . . . . . . . . . . . 222
Washer . . . . . . . . . . . . . . . . . . . . . . . 306
Fog Lamps . . . . . . . . . . . . . . . . . . . . . 172 Bulb Replacement . . . . . . . . . . . . 316
Folding Mirrors . . . . . . . . . . . . . . . . . . 37
Forward Collision Alert
(FCA) System . . . . . . . . . . . . . . . . . 248
Four-Wheel Drive . . . . . . . . . . 222, 310
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . 410
Front Axle . . . . . . . . . . . . . . . . . . . . . . 310
Front Fog Lamp Light . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Front Seats
Adjustment . . . . . . . . . . . . . . . . . . . . . 46
Heated and Ventilated . . . . . . . . . . 53
Front Turn Signal Lamps . . . . . . . 316
Fuel Additives . . . . . . . . . . . . . . . . . . . . . 258
Economy, Driving for Better . . . 187
Filling a Portable Fuel
Container . . . . . . . . . . . . . . . . . . . 261
Filling the Tank . . . . . . . . . . . . . . . 259
Foreign Countries . . . . . . . . . . . . 258
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 132
Low Fuel Warning Light . . . . . . . 143 Management, Active . . . . . . . . . . 214
Prohibited Fuels . . . . . . . . . . . . . . 257
Recommended . . . . . . . . . . . . . . . 257
Top Tier . . . . . . . . . . . . . . . . . . . . . . 256
Full-Size Spare Tire . . . . . . . . . . . . 362
Fuses Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 320
Fuses and Circuit Breakers . . . 319
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . 324, 327
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 329
G
Garage Door Opener . . . . . . . . . . . 163Programming . . . . . . . . . . . . . . . . . 163
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . 314
Gauges Engine CoolantTemperature . . . . . . . . . . . . . . . . 134
Engine Oil Pressure . . . . . . . . . . 133
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Odometer . . . . . . . . . . . . . . . . . . . . . 131
Speedometer . . . . . . . . . . . . . . . . . 131
Tachometer . . . . . . . . . . . . . . . . . . . 131
Trip Odometer . . . . . . . . . . . . . . . . 131
Voltmeter . . . . . . . . . . . . . . . . . . . . . 134 Warning Lights and
Indicators . . . . . . . . . . . . . . . . . . . 126
General Information Service and Maintenance . . . . . 381
Towing . . . . . . . . . . . . . . . . . . . . . . . . 262
Vehicle Care . . . . . . . . . . . . . . . . . . 284
Glass Replacement . . . . . . . . . . . . . 313
Glove Box . . . . . . . . . . . . . . . . . . . . . . 110
GM Mobility Reimbursement
Program . . . . . . . . . . . . . . . . . . . . . . . 404
H
Halogen Bulbs . . . . . . . . . . . . . . . . . . 315
Hazard Warning Flashers . . . . . . . 171
Head Restraints . . . . . . . . . . . . . . . . . 45
Head-up Display . . . . . . . . . . . . . . . . 150
Headlamps . . . . . . . . . . . . . . . . . . . . . 316Aiming . . . . . . . . . . . . . . . . . . . . . . . . 315
Automatic . . . . . . . . . . . . . . . . . . . . . 170
Bulb Replacement . . . . . . . . . . . . 315
Daytime RunningLamps (DRL) . . . . . . . . . . . . . . . . 170
Flash-to-Pass . . . . . . . . . . . . . . . . . 170
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . 315
High-Beam On Light . . . . . . . . . . 143
High/Low Beam Changer . . . . . 169
Lamps On Reminder . . . . . . . . . 144