Passlock; Starting And Operating Your Vehicle; New Vehicle Break-In - GMC 2005 Sierra Denali Owner's Manual

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Passlock

Your vehicle is equipped with the
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Passlock theft-deterrent system.
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Passlock is a passive theft-deterrent system.
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Passlock enables fuel if the ignition lock cylinder is
turned with a valid key. If a correct key is not used or the
ignition lock cylinder is tampered with, fuel is disabled.
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
START as soon as the engine starts.
If the engine is running and the security light comes on,
you will be able to restart the engine if you turn the
engine off. However, your Passlock
not working properly and must be serviced by your
dealer. Your vehicle is not protected by Passlock
time. You may also want to check the fuse. See
Fuses and Circuit Breakers on page 5-102. See your
dealer for service.
In an emergency, call the GM Roadside Assistance
Center. See Roadside Assistance Program on page 7-5.
2-16
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system is
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at this
Starting and Operating Your
Vehicle

New Vehicle Break-In

Notice: Your vehicle does not need an elaborate
break-in. But it will perform better in the long run if
you follow these guidelines:
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Keep your speed at 55 mph (88 km/h) or less for
the first 500 miles (805 km).
•
Do not drive at any one speed — fast or
slow — for the first 500 miles (805 km). Do not
make full-throttle starts.
•
Avoid making hard stops for the first 200 miles
(322 km) or so. During this time your new brake
linings are not 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.
•
Do not tow a trailer during break-in. See Towing a
Trailer on page 4-52 for more information.