GMC 2006 Sierra 1500 Pickup Owner's Manual page 466

5. Open the hoods and locate the positive (+) and
negative ( ) terminal locations of the other vehicle.
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 behind
a red plastic cover, if equipped, near the engine
accessory drive bracket. To uncover the remote
positive (+) terminal, open the red plastic cover,
if equipped.
The remote negative ( ) terminal is located on the
engine drive bracket on all V8 and diesel engines,
and on the thermostat housing on the 8.1L engine.
On V8 engines it is marked GND (Ground).
On V6 engines the remote negative ( ) terminal is
located on a tab attached to the engine accessory
drive bracket where it is marked GND (Ground).
See Engine Compartment Overview on page 5-14
for more information on the location of the remote
positive (+) and remote negative ( ) terminals.
5-54
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.