GMC 2001 Yukon XL Owner's Manual page 271

1. Check the other vehicle. It must have a 12
battery with a negative ground system.
NOTICE:
If the other system isn't a 12
negative ground, both vehicles can be damaged.
2. Get the vehicles close enough so the jumper cables
can reach, but be sure the vehicles aren't touching
each other. If they are, it could cause a ground
connection you don't want. You wouldn't be able
to start your vehicle, and the bad grounding could
damage the electrical systems.
To avoid the possibility of the vehicles rolling, set the
parking brake firmly on both vehicles involved in the
jump start procedure. Put an automatic transmission in
PARK (P) and a manual transmission in NEUTRAL
before setting the parking brake. Put the transmission
in PARK (P). If you have a four
be sure the transfer case is not in NEUTRAL (N).
5-4
-
volt
-
volt system with a
- -
wheel drive vehicle,
3. Turn off the ignition on both vehicles. Unplug
unnecessary accessories plugged into the cigarette
lighter or accessory power outlets. Turn off all lamps
that aren't needed as well as radios. This will avoid
sparks and help save both batteries. In addition,
it could save your radio!
NOTICE:
If you leave your radio on, it could be badly
damaged. The repairs wouldn't be covered by
your warranty.
4. Open the hoods and locate the positive (+) and
-
negative ( ) terminal locations on the other vehicle.
Your vehicle has a remote positive (+) jump starting
terminal and a remote negative (
terminal. The remote positive (+) terminal is located
behind a red plastic cover near the driver's side of the
engine accessory drive bracket. To uncover the remote
positive (+) terminal, open the red plastic cover.
-
The remote negative (
engine accessory drive bracket. This is marked
"GND" on V8 engines.
-
) jump starting
) terminal is located on the