Chevrolet 1998 C/K Full-Size Pickup Owner's Manual page 94

Passlock@
New Vehicle "Break-In"
Your vehicle is equipped with the Passlock
theft-deterrent system.
Passlock is a passive theft-deterrent system. The system
is armed once the key is removed from the ignition.
Passlock enables fuel if the ignition lock cylinder is
turned with a valid key. If a correct key is not used, fuel
is disabled.
During normal operation, the SECURITY light will go
off after the engine is started.
If the engine stalls and the SECURITY light flashes,
wait until the light stops flashing before trying to restart
the engine. Remember to release the key from the
START position as soon as the engine starts.
If you are driving and the SECURITY light comes on, you
will be able to restart the engine if you turn the engine off.
However, your Passlock system
is
not working properly
and must be serviced by your dealer. Your vehicle is not
protected by Passlock at this time. You may also want to
check the fuse (see "Fuses and Circuit Breakers" in the
Index). See your dealer for service.
If the SECURITY light comes on while the engine is
running, a problem has been detected and the system
may need service. See your dealer for service.
NOTICE:
Your vehicle doesn't need an elaborate
"break-in." But it will perform better in the long
run if you follow these guidelines:
Keep your speed at 55 mph (88 km/h) or
less for the first 500 miles (805 km).
0
Don't drive at any one speed
--
fast or
slow
--
for the first 500 miles (805 km).
Don't make full-throttle starts.
200 miles (322 km) or so. During this time
your new brake linings aren't yet broken
in. Hard stops with new linings can mean
premature wear and earlier replacement.
Follow this breaking-in guideline every
time you get new brake linings.
See "Towing a Trailer" in the Index for
more information.
Avoid making hard stops for the first
Don't tow a trailer during break-in.
In an emergency, call the Roadside Assistance Center.