GMC Yukon 2025 - Prohibited Fuels; Fuels in Foreign Countries; Fuel Additives; Filling the Tank

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-17942154) - 2025
280 Driving and Operating
Prohibited Fuels
Caution
Do not use fuels with any of the following
conditions; doing so may damage the
vehicle and void its warranty:
•
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.
(Continued)
Caution (Continued)
•
Fu
el 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
Th
e 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 Fuels
3280.
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
3109.
{ Warning
F
uel vapors and fuel fires burn violently and
c
an 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.
•
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.
(Continued)