GMC 1999 Suburban, Owner'S Manual, Page: 82 / 424

yellow blue
2-12
New Vehicle “Break
-
In”
NOTICE:
Your vehicle doesn’t need an elaborate
“break
-
in.” But it will perform better in the long
run if you follow these guidelines:
D Keep your speed at 55 mph (88 km/h) or
less for the first 500 miles (805 km).
D Don’t drive at any one speed
--
fast or
slow
--
for the first 500 miles (805 km).
Don’t make full
-
throttle starts.
D Avoid making hard stops for the first
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.
D Don’t tow a trailer during break
-
in.
See “Towing a Trailer” in the Index for
more information.
Ignition Positions
CAUTION:
Leaving children in a vehicle with the ignition
key is dangerous for many reasons. A child or
others could be injured or even killed. They could
operate power windows or other controls or even
make the vehicle move. Don’t leave the keys in
the vehicle with children.
Use your key to start your vehicle. The key lets you turn
the ignition switch to five different positions.