GM None Pontiac Aztek - Manual (Page 364)

To reset the system, do the following:
1. With the engine off, turn the ignition to ON.
2. Press the MODE button until the DIC reads TIRE
PRESSURE LOW: CHECK TIRES.
3. Press and hold the SET button until TIRE
PRESSURE NORMAL is displayed.
You will hear three chimes and the LOW TIRE
PRESSURE message will go off and the DIC will return
to TIRE PRESSURE NORMAL. If the LOW TIRE
PRESSURE message comes back on, the check tire
pressure system has not reset. Repeat the procedure.
The system completes the calibration process during
driving. The system learns the pressure at each
tire throughout the operating speed range of your
vehicle. The system normally takes between 30 and
60 minutes of driving to learn the tire pressures.
The system normally takes 10 to 20 minutes of driving
in each speed range to learn tire pressures. The
speed ranges are 20 to 40 mph (32 to 64 km/h), 40 to
60 mph (64 to 96 km/h), and above 60 mph (96 km/h).
This time may be longer depending on your individual
driving habits. The learning process does not need to be
completed during a single trip. Once learned, the
system will remember the tire pressures until the system
is reset.
Tire Inspection and Rotation
Tires should be rotated every 5,000 to 8,000 miles
(8 000 to 13 000 km).
Any time you notice unusual wear, rotate your tires as
soon as possible and check wheel alignment. Also
check for damaged tires or wheels. See When It Is Time
for New Tires on page 5-70 and Wheel Replacement
on page 5-74 for more information.
Make sure the spare tire is stored securely. Push, pull,
and then try to rotate or turn the tire, If it moves,
use the folding wrench to tighten the cable. See “Storing
a Flat or Spare Tire and Tools” in Changing a Flat
Tire on page 5-78.
The purpose of regular rotation is to achieve more
uniform wear for all tires on the vehicle. The first rotation
is the most important. See Scheduled Maintenance
on page 6-4, for scheduled rotation intervals.
5-68