how to fix my GMC Sierra T1XX (2019-Present) tire pressure light that stays on

GMC Sierra T1XX (2019-Present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

541 words

Problem Statement

Learn how to diagnose and fix the tire pressure light issue in GMC Sierra T1XX (2019-Present). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always work on tires when they are cool to avoid burns or injuries
•Ensure the vehicle is securely supported when working on tires

Symptoms

•Tire pressure warning light remains illuminated on the dashboard
•Possible uneven tire wear
•Decreased fuel efficiency
•Vehicle handling issues (pulling to one side)
•Visual inspection shows one or more tires appear under-inflated

Diagnostic Steps

1
Scan the vehicle's system using an OBD-II scanner to check for any error codes related to the Tire Pressure Monitoring System (TPMS)
2
Manually check the tire pressures using a tire pressure gauge to ensure all tires are inflated to the manufacturer's recommended levels
3
Inspect each tire for visible damage, punctures, or leaks
4
Verify that the TPMS sensors are functioning by checking if they are transmitting data to the vehicle's computer
5
Reset the TPMS system by following the manufacturer's reset procedure, often found in the owner's manual

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Tire pressure gauge
•Tire inflator
•Tire changing tools

Parts Required

•TPMS sensors (if defective)
•Tire sealant (if a minor leak is detected)

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Diagnostic Steps

1
Scan the vehicle's system using an OBD-II scanner to check for any error codes related to the Tire Pressure Monitoring System (TPMS)
2
Manually check the tire pressures using a tire pressure gauge to ensure all tires are inflated to the manufacturer's recommended levels
3
Inspect each tire for visible damage, punctures, or leaks
4
Verify that the TPMS sensors are functioning by checking if they are transmitting data to the vehicle's computer
5
Reset the TPMS system by following the manufacturer's reset procedure, often found in the owner's manual

Solution

1. Preparation

Gather tools: tire pressure gauge, OBD-II scanner, and possibly a tire inflator.
Ensure the vehicle is parked on a level surface and the tires are cold (not driven recently).

2. Check and Adjust Tire Pressure

Using the tire pressure gauge, measure the pressure of each tire.
Refer to the sticker located inside the driver's side door jamb for the recommended tire pressures.
If any tire is below the recommended pressure, inflate it to the correct level using a tire inflator.

3. Inspect and Replace TPMS Sensors (if necessary)

If tire pressures are correct and the light remains on, inspect the TPMS sensors:
- Remove the valve stem caps and check for any visible damage to the sensors.
- If damaged, remove the wheel and tire assembly from the vehicle.
- Use a tire machine to dismount the tire from the rim and access the TPMS sensor.
- Replace the defective sensor with a new one, ensuring it is correctly seated and secured.

4. Reset the TPMS

After confirming all tires are properly inflated and sensors are functional, reset the TPMS:
- Turn the ignition to the "ON" position without starting the engine.
- Press the gas pedal three times, then turn the ignition off.
- Start the vehicle and check if the tire pressure light turns off.