GMC 2003 Sierra - Manual (Page 111)

starting Your V8 Engine
1. Wi^h your fool off Ihs accelera(iir pedal, turn the
ignrtion he/ to START, When The engine slarts,
let go of the hey. The idle speed will go down as
your engine gets warm.
Notice: Holding your key fn START for longer than
T5 seconds at a time will cause your baltery to
be drained much sooner« And the excessive heat
cen damage your starter motor. Wait about 15
seconds between each try to help avoid draining
your battery or damaging your starter,
2. II it doesn't start within 10 seconds, push the
accelerator pedal all the way lo the floor, while you
hold the ignition key in START When Ihe engine
Starts, lei go oi the key and let up on the accelerator
pgdal. Wait aboul 15 seconds between each try.
When starting your engine in very coLd weather ibelow
0"For-ia"C), do this:
1. With your ioot off ihe accelerator pedal, turn Ihe
igniflon key lo START and hold it there up to
15 seconds When the engine starts, let go ol
the key.
2. If your engine stHf won'l siad (or starts but then
stops}. It could be flooded with too much gasoline.
Try pushing your accelerator pedal all Ihg way to (he
floor and holding il there as you hold Ihe key in
START for about three seconds. When the engine
starts, tet go of the key and accelerator. If
111 e
vehicle starts brielly bul ihen stops again, do the
same (hing, but Ihis lime keep the pedal down
tor tive or six seconds. This (dears the extra
gasoline iroin the engine,
Notice: Vour engine is designed to work with the
elecLronlcs In your vehicle. If you add eteclrleal
parts or accessories, you could change the way the
engine operates. Before adding electrical equipmenL,
check with your dealer. If you don’t, your engine
might nol perform properly.
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