oil additives CHEVROLET TAHOE 2023 Owners Manual

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-16416971) - 2023 - CRC - 5/16/22
286 Driving and Operating
Caution (Continued)
.For vehicles that are not FlexFuel, fuel
labeled greater than 15% ethanol by
volume, such as mid-level ethanol
blends (16–50% ethanol), E85,
or FlexFuel.
.Fuel with any amount of methanol,
methylal, ferrocene, and aniline. These
fuels can corrode metal fuel system
parts or damage plastic and rubber
parts.
.Fuel containing metals such as
methylcyclopentadienyl manganese
tricarbonyl (MMT), which can damage
the emissions control system and
spark plugs.
.Fuel with a posted octane rating of
less than the recommended fuel. Using
this fuel will lower fuel economy and
performance, and may decrease the
life of the emissions catalyst.
Fuels in Foreign Countries
The U.S., Canada, and Mexico post fuel
octane ratings in anti-knock index (AKI). For
fuel not to use in a foreign country, see
Prohibited Fuels0285.
Fuel Additives
TOP TIER Detergent Gasoline is highly
recommended for use with your vehicle.
If your country does not have TOP TIER
Detergent Gasoline, add ACDelco Fuel
System Treatment Plus−Gasoline to the
vehicle’s gasoline fuel tank at every oil
change or 15 000 km (9,000 mi), whichever
occurs first. TOP TIER Detergent Gasoline and
ACDelco Fuel System Treatment Plus−
Gasoline will help keep your vehicle’s engine
fuel deposit free and performing optimally.
Filling the Tank
If the vehicle has a diesel engine, see the
Duramax diesel supplement.
An arrow on the fuel gauge indicates which
side of the vehicle the fuel door is on. See
Fuel Gauge 0107.
{Warning
Fuel vapors and fuel fires burn violently
and can cause injury or death.
Follow these guidelines to help avoid
injuries to you and others:
(Continued)
Warning (Continued)
.Read and follow all the instructions on
the fuel pump island.
.Turn off the engine when refueling.
.Keep sparks, flames, and smoking
materials away from fuel.
.Do not leave the fuel pump
unattended.
.Avoid using electronic devices while
refueling.
.Do not re-enter the vehicle while
pumping fuel.
.Keep children away from the fuel
pump and never let children
pump fuel.
.Before touching the fill nozzle, touch a
metallic object to discharge static
electricity from your body.
.Fuel can spray out if the fill nozzle is
inserted too quickly. This spray can
happen if the tank is nearly full, and is
more likely in hot weather. Insert the
fill nozzle slowly and wait for any hiss
noise to stop before beginning to
flow fuel.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-16416971) - 2023 - CRC - 4/26/22
326 Vehicle Care
Caution (Continued)
much oil that the oil level gets above the
cross-hatched area that shows the proper
operating range), the engine could be
damaged. Drain the excess oil or limit
driving of the vehicle, and seek a service
professional to remove the excess oil.
See Engine Compartment Overview 0322 for
the location of the engine oil fill cap.
Add enough oil to put the level somewhere
in the proper operating range. Push the
dipstick all the way back in when through.
Selecting the Right Engine Oil
Selecting the right engine oil depends on
both the proper oil specification and
viscosity grade. See Recommended Fluids
and Lubricants 0404.
Specification
Use full synthetic engine oils that meet the
dexos1 specification. Engine oils that have
been approved by GM as meeting the
dexos1 specification are marked with the
dexos1 approved logo.
Caution
Failure to use the recommended engine
oil or equivalent can result in engine
damage not covered by the vehicle
warranty.
Viscosity Grade
Use SAE 0W-20 viscosity grade engine oil.
When selecting an oil of the appropriate
viscosity grade, it is recommended to select
an oil of the correct specification. See
“Specification” earlier in this section.
Engine Oil Additives/Engine Oil Flushes
Do not add anything to the oil. The
recommended oils meeting the dexos1
specification are all that is needed for good
performance and engine protection. Engine oil system flushes are not
recommended and could cause engine
damage not covered by the vehicle
warranty.
What to Do with Used Oil
Used engine oil contains certain elements
that can be unhealthy for your skin and
could even cause cancer. Do not let used oil
stay on your skin for very long. Clean your
skin and nails with soap and water, or a
good hand cleaner. Wash or properly
dispose of clothing or rags containing used
engine oil. See the manufacturer's warnings
about the use and disposal of oil products.
Used oil can be a threat to the environment.
If you change your own oil, be sure to drain
all the oil from the filter before disposal.
Never dispose of oil by putting it in the
trash or pouring it on the ground, into
sewers, or into streams or bodies of water.
Recycle it by taking it to a place that
collects used oil.
Engine Oil Life System
When to Change Engine Oil
This vehicle has a computer system that
indicates when to change the engine oil and
filter. This is based on a combination of

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-16416971) - 2023 - CRC - 4/25/22
434 Index
Fluid (cont'd)Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Forward Collision Alert (FCA) System . . . . . . . . . . . 275
Four Corner Air Suspension Light . . . . . . . . 120
Four Corner Air Suspension System . . . . . . . 231
Four-Wheel Drive . . . . . . . . . . . . . . . . . . . .219, 338
Four-Wheel-Drive
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Frequency Statement
Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 419
Front Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 338
Heated and Ventilated Seats . . . . . . . . . . . . 42
Pedestrian Braking (FPB) System . . . . . . . 278
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286
Dynamic Management . . . . . . . . . . . . . . . . . 214
Economy, Driving for Better . . . . . . . . . . . 195
Filling a Portable Fuel Container . . . . . . . 287
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . 286
Foreign Countries . . . . . . . . . . . . . . . . . . . . . . 286
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Low Fuel Warning Light . . . . . . . . . . . . . . . 122
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . 285
Recommended . . . . . . . . . . . . . . . . . . . . . . . . . 285 Fuel (cont'd)
Top Tier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285
Full-Size Spare Tire . . . . . . . . . . . . . . . . . . . . . . . 382
Fuses Engine Compartment Fuse Block . . . . . . . 345
Fuses and Circuit Breakers . . . . . . . . . . . . . 344
Instrument Panel Fuse Block . . . . . . . . . . . 349
Rear Compartment Fuse Block . . . . . . . . . 351
G
Garage Door Opener . . . . . . . . . . . . . . . . . . . . . . 132Programming . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 340
Gauges Engine Coolant Temperature . . . . . . . . . . . 109
Engine Oil Pressure . . . . . . . . . . . . . . . . . . . . 108
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Transmission Temperature . . . . . . . . . . . . . 110
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . . . . 107
Voltmeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Warning Lights and Indicators . . . . . . . . . 101
General Information Service and Maintenance . . . . . . . . . . . . . . 399
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288
Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 319 Glass Replacement . . . . . . . . . . . . . . . . . . . . . . . 340
Global Positioning System (GPS) . . . . . . . . . 163
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
GM Mobility Reimbursement
Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 414
Guidance Problems with the Route . . . . . . . . . . . . . . 164
H
Hazard Warning Flashers . . . . . . . . . . . . . . . . 139
Head Restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Head-Up Display (HUD) . . . . . . . . . . . . . . . . . . .128
Headlamps
Aiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341
Automatic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . 341
Daytime Running Lamps (DRL) . . . . . . . . . 138
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
High-Beam On Light . . . . . . . . . . . . . . . . . . . 122
High/Low Beam Changer . . . . . . . . . . . . . . 138
Lamps On Reminder . . . . . . . . . . . . . . . . . . . 122
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Steering Wheel . . . . . . . . . . . . . . . . . . . . . . . . . 94
Ventilated Front Seats . . . . . . . . . . . . . . . . . . 42
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186, 189
High-Beam On Light . . . . . . . . . . . . . . . . . . . . . . 122