GMC Sierra Denali 2006 Owner's Manual page 321

4. Open the hood on the other vehicle and locate the
positive (+) and negative (−) terminal locations.
Your vehicle has a remote positive (+) jump starting
terminal and a remote negative (−) jump starting
terminal. You should always use these remote
terminals instead of the terminals on the battery.
The remote positive (+) terminal is located near
the engine accessory drive bracket. To uncover
the remote positive (+) terminal, open the red
plastic cover.
The remote negative (−) terminal is located on the
engine drive bracket and is marked GND (Ground).
See Engine Compartment Overview on page 5-10
for more information on location.
CAUTION:
{
An electric fan can start up even when the
engine is not running and can injure you. Keep
hands, clothing and tools away from any
underhood electric fan.
CAUTION:
{
Using a match near a battery can cause battery
gas to explode. People have been hurt doing
this, and some have been blinded. Use a
flashlight if you need more light.
Be sure the battery has enough water. You do
not need to add water to the battery installed
in your new vehicle. But if a battery has filler
caps, be sure the right amount of fluid is there.
If it is low, add water to take care of that first.
If you do not, explosive gas could be present.
Battery fluid contains acid that can burn you.
Do not get it on you. If you accidentally get it
in your eyes or on your skin, flush the place
with water and get medical help immediately.
5-41