2002 GMC YUKON XL battery replacement

2-9Keyless Entry System You can lock and unlock your doors and liftgate from
about 3 feet (1 m) up to 30 feet (9 m) away using
the remote keyless entry transmitter supplied with
your vehicle.
Your keyless entry system operates on a radio frequency
subject to Federal Communications Commission (FCC)
Rules and with Industry Canada.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) this device may not cause harmful interference,
and (2) this device must accept any interference received,
including interference that may cause undesired operation.
This device complies with RSS
- 210 of Industry Canada.
Operation is subject to the following two conditions:
(1) this device may not cause interference, and (2) this
device must accept any interference received, including
interference that may cause undesired operation of
the device. Changes or modifications to this system by other than
an authorized service facility could void authorization
to use this equipment.
At times you may notice a decrease in range. This is
normal for any remote keyless entry system. If the
transmitter does not work or if you have to stand closer
to your vehicle for the transmitter to work, try this:

Check the distance. You may be too far from your
vehicle. You may need to stand closer during rainy
or snowy weather.

Check the location. Other vehicles or objects may
be blocking the signal. Take a few steps to the left
or right, hold the transmitter higher, and try again.

Check to determine if battery replacement or
resynchronization is necessary. See the instructions
that follow.

If you're still having trouble, see your dealer or a
qualified technician for service.

2-11Battery Replacement Under normal use, the battery in your remote keyless
entry transmitter should last about two years.
You can tell the battery is weak if the transmitter won't
work at the normal range in any location. If you have to
get close to your vehicle before the transmitter works,
it's probably time to change the battery.
NOTICE: When replacing the battery, use care not to touch
any of the circuitry. Static from your body
transferred to these surfaces may damage the
transmitter. To replace the battery in the keyless entry transmitter,
do the following:
1. Insert a thin object, such as a coin, in the slot
between the covers of the transmitter housing near
the key ring hole. Remove the bottom by twisting
the coin.
2. Remove and replace the battery with a three
- volt
CR2032 or equivalent battery, positive (+) side up.
3. Align the covers and snap them together.
4. Check the operation of the transmitter.

6-
6-1Section 6 Service and Appearance CareHere you will find information about the care of your vehicle. This section begins with service and fuel information,
and then it shows how to check important fluid and lubricant levels. There is also technical information about your
vehicle, and a part devoted to its appearance care.
6
- 2 Service
6
- 3 Fuel
6
- 5 Fuels in Foreign Countries
6
- 6 Filling Your Tank
6
- 8 Filling a Portable Fuel Container
6
- 8 Checking Things Under the Hood
6
- 11 Engine Oil
6
- 17 Engine Air Cleaner/Filter
6
- 19 Passenger Compartment Air Filter
6
- 20 Automatic Transmission Fluid
6
- 23 Rear Axle
6
- 24 All
- Wheel Drive
6
- 26 Engine Coolant
6
- 29 Coolant Surge Tank Pressure Cap
6
- 30 Power Steering Fluid 6
- 31 Windshield Washer Fluid
6
- 32 Brakes
6
- 36 Battery
6
- 37 Bulb Replacement
6
- 41 Windshield Wiper Blade Replacement
6
- 42 Tires
6
- 51 Appearance Care
6
- 51 Cleaning the Inside of Your Vehicle
6
- 55 Cleaning the Outside of Your Vehicle
6
- 59 GM Vehicle Care/Appearance Materials
6
- 60 Vehicle Identification Number (VIN)
6
- 61 Electrical System
6
- 69 Replacement Bulbs
6
- 70 Capacities and Specifications
6
- 71 Normal Maintenance Replacement Parts

6-36Replacing Brake System Parts The braking system on a vehicle is complex. Its many
parts have to be of top quality and work well together
if the vehicle is to have really good braking. Your
vehicle was designed and tested with top
- quality GM
brake parts. When you replace parts of your braking
system
-- for example, when your brake linings wear
down and you need new ones put in
-- be sure you get
new approved GM replacement parts. If you don't, your
brakes may no longer work properly. For example, if
someone puts in brake linings that are wrong for your
vehicle, the balance between your front and rear brakes
can change
-- for the worse. The braking performance
you've come to expect can change in many other ways if
someone puts in the wrong replacement brake parts.
Battery Your new vehicle comes with a maintenance free
ACDelco

battery. When it's time for a new battery,
get one that has the replacement number shown on the
original battery's label. We recommend an ACDelco
battery. See ªEngine Compartment Overviewº in the
Index for battery location.
WARNING: Battery posts, terminals and related
accessories contain lead and lead compounds, chemicals
known to the State of California to cause cancer and
reproductive harm. Wash hands after handling. Vehicle Storage If you're not going to drive your vehicle for 25 days
or more, remove the black, negative (
- ) cable from
the battery. This will help keep your battery from
running down.
CAUTION: Batteries have acid that can burn you and gas
that can explode. You can be badly hurt if you
aren't careful. See ªJump Startingº in the Index
for tips on working around a battery without
getting hurt.
Contact your dealer to learn how to prepare your vehicle
for longer storage periods.
Also, for your audio system, see ªTheft
- Deterrent
Featureº in the Index.
To reprogram your sunroof (if equipped), see ªSunroofº
also in the Index.

8-6Roadside Assistance
GMC's Roadside Assistance provides stranded owners
with over
- the
- phone roadside repairs, location of the
nearest GMC dealer or the following special services:
Flat Tire Change: Installation of spare tire will be
covered at no charge (customer is responsible for repair
or replacement of tire). Fuel Delivery: Delivery of enough fuel for the customer
to get to the nearest service station (up to $5.00) will
be covered.
Jump Start: No
- start situations which require a battery
jump start will be covered at no charge.
Lock Out: Replacement keys or locksmith service will
be covered at no charge if you are unable to gain entry
into your vehicle. Delivery of the replacement key will
be covered at no charge within 10 miles (16 km).
Emergency Towing Service: Towing to the nearest
GMC dealer for warranty related disablements will
be covered.
Trip Routing : Custom
- made, computerized highlighted
maps using the most direct or scenic route are provided
free of charge. Maps include points of interest and a list
of GMC dealers along the route. Also included is a list
of hotels along the route that are discounted through
affiliation with ªQuest International.º Trip Routing
is available through Roadside Assistance by calling
1
- 800
- GMC
- 8782 (462-8782). Please be prepared
to provide your Vehicle Identification Number (VIN).
Allow five working days for fulfillment.