GMC 2003 Envoy - Manual (Page 339)

A CAUTION:
Using a match near a battery can cauae battery
gaa to explode. People have been hurt doing
this, and some have been blindod. Use a
flashlight Jf you need more light.
Be sure the battery has enough water. You
don’t need to add water to the ACD
e I co *
battery installed in your new vehicle. But it a
battery has filler caps, be sure the right
amount of fluid is there, tf it Is low, add water
to take tare ot that first, it you don’t, explDsiva
gas could be present.
Battery fluid contains acid that can burn you.
Don't get It on you. If you accidentally get it in
your eyes or cn youf skin, flush the place with
water and get medical help immediately.
5^4
A CAUTION:
Fans or other moving engine parte can injure
you badly. Keep your hands away from moving
parts once the engine is running.
5. Check ihat the jumper cables don't have loose or
missing insulation. If they do, you could ^el a
shDck. The vehicles could be damaged too.
Belore you conncict the cshles, here are some
basic things you should know. Positive (i-) will go to
positivo
[ 4 ) or to a remote poalive ( 4 ) terminal if
the vehicfe has one. Negative (-) will 90 to a heavy,
unpainted metal engine part or to a remote
negative (-) terminal it the vehicle has ong. Don’l
conned positive
{^) lo negative (-) or you'll get
a short that would damage the battery a net maybe
other parts too, Ard don't connect the negative (-)
cable
10 Ihe negative H terminal on the dead
battery because this can cause sparks.