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

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Passlock

Your vehicle is equipped with the Passlock
theft-deterrent system.
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Passlock is a passive theft-deterrent system. 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, the fuel system is
disabled and the vehicle will not start.
During normal operation, the security light will turn off
approximately five seconds after the key is turned
to RUN.
If the engine stalls and the security light flashes, wait
about 10 minutes 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 does not start after three tries, the vehicle
needs service.
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
properly and must be serviced by your dealer. Your
vehicle is not protected by Passlock
may also want to check the fuse. See Fuses and Circuit
Breakers on page 5-105. See your dealer for service.
In an emergency, call the Roadside Assistance Center.
See Roadside Assistance Program on page 7-6.
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system is not working
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at this time. You
Starting and Operating Your
Vehicle
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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.
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Do not tow a trailer during break-in. See Towing a
Trailer on page 4-52 for more information.
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