Under acceleration the car pulls to the left but is fine under steady speed driving and tracks straight. Tire inflation is normal.

Using the Driver Information Center (DIC)
Important: After resetting, the tire pressure monitoring (TPM) system requires up to 8 km/h (5 miles) of flat, smooth road straight line driving in each of the 4 speed ranges to complete the calibration process. For further information, refer to Tire Pressure Monitor Description and Operation . If the TPM system does not reset, refer to Driver Information Center (DIC) Switch Inoperative .

1. Set all tire pressures to the recommended kPa/psi. Refer to Vehicle Certification, Tire Placard, Anti-Theft, and Service Parts ID Label .
2. Turn ON the ignition, with the engine OFF.
3. Press the vehicle information button until TIRE INFLATION MONITOR SYSTEM PRESS (down/left arrow) SWITCH TO RESET is displayed.
4. If the system is being reset due to a low tire pressure condition, press and hold the down/left arrow button until TIRE INFLATION MONITOR SYSTEM HAS BEEN RESET is displayed. If the system is being reset due to a tire rotation, press and hold the down/left arrow button for 5 seconds.
5. Release the down/left arrow button and TIRE PRESSURE NORMAL is displayed.

Most likely cause of a car / van pulling to one side is that the wheel tracking is out , or incorrectly inflated tyres. If tracking is out the tyres will wear more on one edge.

Once the tires are correctly inflated as per the required PSI, the light should go away, if not, follow these possible solutions. We are sure one of thse will work for you:
1. Drive at a steady speed of 50 mph for 10 minutes or higher, then switch off the engine, this may get the light to stop
2. Turn the key to the ON position and then press and hold the TPMS reset button located under the steering wheel. Check the car's manual to see where it's located. Hold the button until the TPMS light blinks thrice. Crank up the engine, and the sensor shall refresh within 20 minutes
3. Inflate all four tires to their recommended pressure plus three PSI more. Then deflate them entirely and then reinflate them to the recommended PSI
4. Remove the positive wire of the battery, switch on the car, and then press and hold the horn for three seconds to discharge any power left in the vehicle. Then reconnect the battery, and the problem should be solved.

Its the low tire light. On the drivers side door opening you should be able to find a sticker that tells you the proper tire inflation for you vehicle. Check all four tires to make sure they are properly inflated. If that tire is low it probably indicates there is a leak. Once all four tires are inflated drive the vehicle on the freeway for about ten minutes. the light should go out. If the light comes back on and the same tire is low than there is definitely a leak.

If all the tires are properly inflated and the light comes on there may be a problem with the sensor in that wheel. A TPMS scanner will be needed to see what the sensors are displaying for pressure.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

you could have a tire problem, if you could cross the front tires see if it pulls the other way

Hello Mattingly.

Here is some information for you regarding your problem.

The Tire Inflation Monitor (TIM) system alerts the driver when the pressure changes in one of the tires. The system only detects a low pressure condition while the vehicle is being driven. Once a low tire pressure condition is detected, the system informs the driver that a low tire pressure condition exist's, whenever the ignition is ON.
The LOW TIRE message appears on the Instrument panel if the tire pressure in one tire becomes at least 82 kPa (12 psi) lower or higher than the other three tires. The message does not appear if more than one tire is low or high, or if the system is not calibrated properly. The system does not inform the driver which tire is low. To clear this message, set the tire pressures in all four tires to the proper pressures and perform the system reset procedure. Refer to Tire Inflation Monitor Reset Procedure for service procedure.
The Tire Inflation Monitor software requires approximately one half hour of straight line driving to complete the TIM autolearn. There are several speed ranges that the EBCM needs to learn the tire inflation configuration in order to have the full capability of detecting a low tire condition. The speed detection ranges are the following:

• 24-64 km/h (15-40 mph)
• 64-113 km/h (40-70 mph)
• 113-145 km/h (70-90 mph)

Each speed range has 2 modes of low tire detection.

• Monitor Mode 1
• Monitor Mode 2 The EBCM learns the tire inflation configuration for each speed range independently. In Monitor Mode 1, the EBCM has only partially learned the tire inflation configuration for the speed range and has limited detection capability for a low tire condition. In Monitor Mode 2, the EBCM has fully learned the tire inflation configuration for the speed range and has full detection capability for a low tire condition. If the EBCM is not in Monitor Mode 1 or Monitor Mode 2, a low tire condition cannot be detected because the EBCM has not learned the tire inflation configuration of the vehicle.

To reset (calibrate) the system:
Turn the ignition switch to RUN. Then press and hold the RESET button for about five seconds. The red RESET button is located inside the instrument panel fuse block on the right side of the dash.. The LOW TIRE light will come on and flash three times and then it will turn off.
The system completes the calibration process during driving.
The system normally takes 15 to 20 minutes of driving in each of three speed ranges to "learn" tire pressures. The speed rages are 15 to 40 mph (25 to 65 km/h), 40 to 65 mph (65 to 105 km/h) and above 65 mph (105 km/h).

There you are, this should fix you up.
Keep in mind this system uses wheel speed sensors to calculate. If one of your sensors isn't working your low tire light will remain on.

Thank you for using FixYa.

KL

SOME THINGS i WOULD CHECK...
1st. check tire inflation. make sure they all are the same. under inflated tire can cause a pull.
2nd. jack up front end, placing hands on the tires in the 3oclock and 9 oclock positions see if you can wiggle the tire in and out. If there is any play, you will feel it right away. This is classic tie rod end wear and is the cause of your pull. if you replace it yourself, you will need an alignment after.
good luck

It either has Tire Pressure Monitor (TPM), or Flat Tire Monitor (FTM)

TPM:Checks the tire inflation pressure in the four mounted tires. The system indicates if the tire inflation pressure has dropped considerably in one or several tires.

FTM:Keeps track of the inflation pressures in the four mounted tires as you drive. The system triggers an alert whenever the inflation pressure drops significantly in relation to the pressure in another tire.

I don't know what 'cupping' is. If you mean wear, then it is probably down to having incorrect tracking set on the car. Go to a garage and get the toe out checked. If your tracking is out, you will wear the edge of the tyres. Over inflation will cause the centre of the tyre to wear, and under inflation will cause the outer and inner band of the tread to wear.
The vibration may be caused by the loss of wheel weights. Maybe knocked off by hitting a kerb which also may be the cause of the tracking being out. Driving over a deep pot hole in the road can have the same effect.

do the tires were right it could be out of alinment or only 1 front tire is pulling it could be in the trans