Mechanics

AIR PRESSUURE MONITOR

2004 Pontiac Grand Prix

Tires and Wheels problem
2004 Pontiac Grand Prix 6 cyl Front Wheel Drive Automatic 87000 miles

ck air press. Comes on every time the car is started, I check press.. No problem. Something is wrong with sensor. What?
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Tmort45
November 8, 2009.




TIRE PRESSURE MONITOR SYSTEM RECALIBRATION (2004-06)

NOTE: When a wheel is replaced or rotated, tire pressure has been adjusted or vehicle's battery has been disconnected, TPM system will need to be recalibrated.

NOTE: On the GXP models, the front and rear tires are different sizes, and tire rotation is not recommended. Follow vehicle manufacturer's recommended procedures.

CAUTION: DO NOT recalibrate TPM system until all problems are fixed and tire pressure in all 4 tires has been adjusted. If recalibration is done when tire pressures are incorrect, TPM system will not work properly and may not set an alert when a tire pressure is low or high.

Turn ignition switch to OFF position.
Ensure all tire pressures are adjusted to the pressure recommended on tire pressure label.
Turn ignition switch to ON position, with engine off.
Press vehicle information button until " TIRE INFLATION MONITOR SYSTEM PRESS (down/left arrow) SWITCH TO RESET" is displayed.
If system is being reset due to a low tire pressure condition, press and hold down/left arrow button until " TIRE INFLATION MONITOR SYSTEM HAS BEEN RESET" is displayed. If system is being reset due to a tire rotation, press and hold down/left arrow button for 5 seconds.
Release down/left arrow button and " TIRE PRESSURE NORMAL" is displayed.
After resetting, the TPM system requires up to 5 miles (8 km) of flat, smooth road, straight line driving in each of the 4 speed ranges (about 10-20 minutes in each range) to complete the calibration process: 19-40 MPH (31-65 KM/H).
40-59 MPH (65-95 KM/H).
59-74.5 MPH (95-120 KM/H).
74.5-90 MPH (120-145 KM/H).
NOTE: The EBCM learns tire pressure calibration for each speed range independently. In Calibration Mode, EBCM has only partially learned tire pressure calibration for speed range and has limited detection capability for a tire pressure condition. In Detection Mode, EBCM has fully learned tire pressure calibration for speed range and has full detection capability for a tire pressure condition.

NOTE: Learning process does not need to be completed during a single trip.

BMRFIXIT
Nov 8, 2009.


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