GMC Yukon 2025 - Battery - North America

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-17942154) - 2025
332 Vehicle Care
•
A
fluid leak in the brake hydraulic system.
Have the brake hydraulic system fixed.
With aleak, the brakes will not work well.
Always clean the brake fluid reservoir cap and
the area around the cap before removing it.
Do not top off the brake fluid. Adding fluid does
not correct aleak. If fluid is added when the
linings are worn, there will be too much fluid
when new brake linings are installed. Add or
remove fluid, as necessary, only when work is
done on the brake hydraulic system.
{ Warning
I
f too much brake fluid is added, it can spill
on
the engine and burn, if the engine is hot
enough. You or others could be burned, and
the vehicle could be damaged. Add brake
fluid only when work is done on the brake
hydraulic system.
When the brake fluid falls to alow level,
the brake warning light comes on. See Brake
System Warning Light 3116.
Brake fluid absorbs water over time which
de
grades the effectiveness of the brake fluid.
Replace brake fluid at the specified intervals
to prevent increased stopping distance. See
Maintenance Schedule 3398.
What to Add
Use only GM approved DOT 4brake fluid from
aclean, sealed container. See Recommended
Fluids and Lubricants 3402.
{ W
arning
T
he wrong or contaminated brake fluid
c
o
uld result in damage to the brake system.
This could result in the loss of braking
leading to a possible injury. Always use the
proper GM approved brake fluid.
Caution
If brake fluid is spilled on the vehicle's
pa
inted surfaces, the paint finish can
be damaged. Immediately wash off any
painted surface.
Battery - North America
Th
e original equipment battery is maintenance
free. Do not remove the cap and do not
add fluid.
Refer to the replacement number shown on
the original battery label when anew battery
is needed. See Engine Compartment Overview
3317 for battery location.
The vehicle has an Absorbent Glass Mat (AGM)
12-volt battery. Installation of astandard 12-
volt battery will result in reduced 12-volt
battery life.
When using a 12-volt battery charger on the 12-
volt AGM battery, some chargers have an AGM
battery setting on the charger. If available,
use the AGM setting on the charger, to limit
charge voltage to 14.8 volts. Follow the charger
manufacturer's instructions.
Stop/Start System
This vehicle has a Stop/Start system to shut off
the engine to help conserve fuel. See Stop/Start
System 3198.