GMC 2007 Envoy - Manual (Page 112)

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
® 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 on page 493. See your dealer
for service.
In an emergency, call the GM Roadside
Assistance Center. See Roadside Assistance
Program on page 532.
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:
• Keep your speed at 55 mph (88 km/h)
or less for the first 500 miles (805 km).
• Do not drive at any one constant speed,
fast or slow, for the first 500 miles (805 km).
Do not make full-throttle starts. Avoid
downshifting to brake, or slow, the vehicle.
• 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 362 for the trailer
towing capabilities of your vehicle and more
information.
Following break-in, engine speed and load can
be gradually increased.
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