2023 BUICK ENCORE GX open gas tank

Buick Encore GX Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16263917) - 2023 - CRC - 2/24/22
238 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 Fuels0237.
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
An arrow on the fuel gauge indicates which
side of the vehicle the fuel door is on. See
Fuel Gauge 096.
{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:
.Read and follow all the instructions on
the fuel pump island.
.Turn off the engine when refueling.
(Continued)
Warning (Continued)
.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.

Buick Encore GX Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16263917) - 2023 - CRC - 2/24/22
358 Index
FluidAutomatic Transmission . . . . . . . . . . . . . . . 258
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Fog Lamp Light Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Fog Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Folding Seatback . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Forward Collision Alert (FCA) System . . . . . . . . . . . 227
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 343
Front Heated Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Pedestrian Braking (FPB) System . . . . . . . 231
Front Seats Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238
Economy, Driving for Better . . . . . . . . . . . 184
Filling a Portable Fuel Container . . . . . . . 239
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . 238
Foreign Countries . . . . . . . . . . . . . . . . . . . . . . 238
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Low Fuel Warning Light . . . . . . . . . . . . . . . 106
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . 237
Recommended . . . . . . . . . . . . . . . . . . . . . . . . . 237 Fuel (cont'd)
Top Tier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
Fuses Engine Compartment Fuse Block . . . . . . . 280
Fuses and Circuit Breakers . . . . . . . . . . . . . 279
Instrument Panel Fuse Block . . . . . . . . . . . 283
Rear Compartment Fuse Block . . . . . . . . . 284
Where To Find Fuse Maps for YourVehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280
G
Garage Door Opener . . . . . . . . . . . . . . . . . . . . . . 117Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
Gauges Engine Coolant Temperature . . . . . . . . . . . . 97
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Warning Lights and Indicators . . . . . . . . . . 92
General Information Service and Maintenance . . . . . . . . . . . . . . 322
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Global Positioning System (GPS) . . . . . . . . . 150
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 GM Mobility Reimbursement
Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 338
Guidance Problems with the Route . . . . . . . . . . . . . . 150
H
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . 273
Hazard Warning Flashers . . . . . . . . . . . . . . . . .124
HD Radio Technology . . . . . . . . . . . . . . . . . . . . . 135
Head Restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Head-Up Display (HUD) . . . . . . . . . . . . . . . . . . . 113
HeadlampsAiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
Automatic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . 272
Daytime Running Lamps (DRL) . . . . . . . . . 123
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
High-Beam On Light . . . . . . . . . . . . . . . . . . . 107
High/Low Beam Changer . . . . . . . . . . . . . . 122
Lamps On Reminder . . . . . . . . . . . . . . . . . . . 107
Heated
Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Steering Wheel . . . . . . . . . . . . . . . . . . . . . . . . . 85
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177, 179
High-Beam On Light . . . . . . . . . . . . . . . . . . . . . 107