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How do I fix a fuel gauge that is not working in my 2019 Chevrolet Silverado 1500 T1XX? - Chevrolet Silverado 1500
Home/Cars/Chevrolet/Silverado 1500/T1XX (2019-2023)/How do I fix a fuel gauge that is not working in my 2019 Chevrolet Silverado 1500 T1XX?

How do I fix a fuel gauge that is not working in my 2019 Chevrolet Silverado 1500 T1XX?

Chevrolet Silverado 1500 T1XX (2019-2023)

Error Codes
2-4 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
4 min read
662 words

Problem Statement

Learn how to diagnose and repair a non-working fuel gauge in your 2019 Chevrolet Silverado 1500 T1XX with step-by-step instructions and required tools.

Affected Component
fuel gauge
Estimated Time
2-4 hours

Symptoms

  • •Fuel gauge reads empty or inaccurately displays fuel level.
  • •Check Engine Light may be illuminated.
  • •Odd behavior, such as fluctuating readings.

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10

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
  • •Multimeter
  • •Socket set (including 10mm or 15mm sockets)
  • •Screwdrivers (flathead and Phillips)
  • •Fuel line disconnect tool
  • •Safety goggles
  • •Shop towels
  • •Replacement fuel sender unit (if necessary)

Additional Information

Affected Component
fuel gauge
Estimated Time
2-4 hours
Difficulty
medium
Severity
medium
Tools Required
8 items

Related Faults

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Back to Generation
Fixing a Non-Working Fuel Gauge in a 2019 Chevrolet Silverado 1500 T1XX
Tools Required
  • OBD-II Scanner
  • Multimeter
  • Socket set (including 10mm or 15mm sockets)
  • Screwdrivers (flathead and Phillips)
  • Fuel line disconnect tool
  • Safety goggles
  • Shop towels
  • Replacement fuel sender unit (if necessary)
Repair Instructions

Step 1: Access the Fuel Sender Unit

  1. Relieve Fuel Pressure

    • Start the vehicle, and then remove the fuel pump relay from the fuse box (refer to the owner’s manual for the exact location).
    • Run the engine until it stalls to relieve pressure in the fuel lines.

  2. Disconnect Battery

    • Disconnect the negative terminal of the battery to prevent electrical shorts.

  3. Remove the Fuel Tank

    • Lift the vehicle using a jack and secure it with jack stands.
    • Disconnect any fuel lines using a fuel line disconnect tool and remove any protective shields or brackets.
    • Remove bolts securing the fuel tank to the vehicle frame.
    • Carefully lower the tank and disconnect the wiring harness leading to the fuel sender unit.

Step 2: Test the Fuel Sender Unit

  1. Remove the Sender Unit

    • Carefully detach the fuel sender unit from the tank, taking note of the orientation.
    • Inspect the float arm for any damage or obstruction.

  2. Check Resistance

    • Using a multimeter, measure the resistance of the sender unit while moving the float up and down. It should show varying resistance (typically between 0-90 ohms).
    • If the resistance is inconsistent or outside the normal range, replace the fuel sender unit.

Step 3: Replace the Fuel Sender Unit (if necessary)

  1. Install New Sender

    • Install the new fuel sender unit into the tank, ensuring it’s oriented correctly.
    • Reconnect the wiring harness to the sender unit.

  2. Reinstall the Fuel Tank

    • Raise the fuel tank back into position and secure it with bolts.
    • Reconnect any fuel lines and protective shields.

Step 4: Reconnect Battery and Test Gauge

  1. Reconnect Battery

    • Reconnect the negative terminal of the battery.

  2. Install Fuel Pump Relay

    • Reinstall the fuel pump relay into the fuse box.

  3. Turn on Ignition

    • Turn the ignition to the "On" position without starting the engine.
    • Observe the fuel gauge for proper operation.

Step 5: Verify No DTCs are Present

  1. Use OBD-II Scanner
    • Check for any remaining trouble codes.
    • Clear any codes if necessary and perform a test drive to ensure the issue is resolved.
Conclusion

If the fuel gauge still does not work after following these steps, further investigation may be needed into the instrument cluster or wiring. If you are not comfortable performing these tasks, it is advised to consult a professional technician.