how to troubleshoot power windows not working in GMC Sierra T1XX (2019-Present)

GMC Sierra T1XX (2019-Present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

512 words

Problem Statement

Learn how to troubleshoot and fix power windows not working in GMC Sierra T1XX (2019-Present). Step-by-step guide with diagnostic steps and solutions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to avoid short circuits.
•Ensure the vehicle is in a stable position before removing door panels.

Symptoms

•No response when pressing the window switch
•Windows do not move in either the driver's or passenger's control
•Window lock feature is engaged or disengaged without effect
•Audible clicking sound when pressing the switch, but no movement
•Warning light for electrical system illuminated on dashboard

Diagnostic Steps

1
Check the window lock switch to ensure it is not engaged.
2
Inspect the fuse for the power windows in the fuse panel; replace if blown.
3
Use an OBD-II scanner to check for any related error codes.
4
Test the power window switch for continuity using a multimeter.
5
Inspect wiring and connectors leading to the window motor for damage or corrosion.
6
Test the window motor directly by applying power to it to confirm functionality.

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
•Screwdriver set
•Fuse puller or needle-nose pliers

Parts Required

•Replacement window switch (if faulty)
•Replacement window motor (if faulty)
•Fuses (as needed)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Symptoms

•No response when pressing the window switch

•Windows do not move in either the driver's or passenger's control

•Window lock feature is engaged or disengaged without effect

•Audible clicking sound when pressing the switch, but no movement

•Warning light for electrical system illuminated on dashboard

Diagnostic Steps

1
Check the window lock switch to ensure it is not engaged.
2
Inspect the fuse for the power windows in the fuse panel; replace if blown.
3
Use an OBD-II scanner to check for any related error codes.
4
Test the power window switch for continuity using a multimeter.
5
Inspect wiring and connectors leading to the window motor for damage or corrosion.
6
Test the window motor directly by applying power to it to confirm functionality.

Solution

1. Preparation

Gather necessary tools and safety equipment.
Disconnect the vehicle battery to prevent electrical shock.

2. Inspect and Replace Fuse

Tools Required: Fuse puller or needle-nose pliers.
Locate the fuse box (typically under the dashboard or in the engine compartment).
Identify the power window fuse using the fuse diagram.
Remove the fuse and inspect it for continuity; replace if necessary with the same amperage.

3. Test and Replace Window Switch

Tools Required: Multimeter, screwdriver set.
Remove the door panel to access the window switch.
Disconnect the switch connector.
Use a multimeter to test for continuity in the switch. If faulty, replace the switch with a new one.
Reconnect the switch and reassemble the door panel.

4. Inspect and Test Window Motor

Tools Required: Multimeter, screwdriver set, power supply (12V battery).
Access the window motor by removing the door panel.
Inspect the motor and its connections for any signs of damage.
Connect the motor directly to a power source to test its function. If it does not operate, replace the window motor.

5. Reassemble and Test

Tools Required: Screwdriver set.
Reattach the door panel securely.
Reconnect the vehicle battery.
Test all windows for proper operation.