GMC Sierra T1XX (2019-Present) tire pressure light stays on, what to do?

GMC Sierra T1XX (2019-Present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

529 words

Problem Statement

Learn how to diagnose and fix the tire pressure light issue on 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

•Ensure the vehicle is securely supported when working on tires.
•Always wear safety gloves and eyewear when handling tires and tools.

Symptoms

•Tire pressure warning light illuminated on the dashboard
•Inconsistent tire pressure readings on the display
•Possible uneven tire wear
•Low tire pressure in one or more tires
•Reduced fuel efficiency

Diagnostic Steps

1
Verify tire pressures using a reliable tire pressure gauge.
2
Check all tires, including the spare, for any visible damage or punctures.
3
Use an OBD-II scanner to check for any related error codes in the Tire Pressure Monitoring System (TPMS).
4
Reset the TPMS using the reset procedure specified in the owner's manual.
5
Inspect the TPMS sensors for damage or corrosion.
6
Examine the wiring and connections related to the TPMS for any frayed wires or loose connections.

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

•Tire pressure gauge
•OBD-II scanner
•Tire repair kit
•TPMS tool

Parts Required

•Replacement TPMS sensors
•Tire repair materials

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Diagnostic Steps

1
Verify tire pressures using a reliable tire pressure gauge.
2
Check all tires, including the spare, for any visible damage or punctures.
3
Use an OBD-II scanner to check for any related error codes in the Tire Pressure Monitoring System (TPMS).
4
Reset the TPMS using the reset procedure specified in the owner's manual.
5
Inspect the TPMS sensors for damage or corrosion.
6
Examine the wiring and connections related to the TPMS for any frayed wires or loose connections.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure vehicle is parked on a level surface and the engine is off.
Wear safety gloves and eyewear.

2. Check Tire Pressure

Use a tire pressure gauge to measure the pressure in each tire, including the spare.
Inflate or deflate tires as necessary to match the manufacturer's recommended pressure, usually found on the driver’s side door jamb.

3. Inspect Tires

Visually inspect each tire for signs of damage, such as cuts, bulges, or foreign objects.
If damage is found, proceed to remove the tire for repair or replacement.

4. Test TPMS Sensors

If no tire damage is found, remove the wheel and tire assembly to access the TPMS sensor.
Inspect the sensor for any physical damage or corrosion.
Replace the TPMS sensor if necessary.

5. Reset the TPMS

After ensuring all tires are properly inflated and sensors are functional, reset the TPMS by following these steps:
1. Turn the ignition to the "ON" position without starting the engine.
2. Locate the TPMS reset button (usually under the steering column or near the fuse box).
3. Press and hold the reset button until the TPMS light blinks three times, then release.

6. Recheck Tire Pressure

After resetting, recheck all tire pressures again to ensure they are correct.