2017 1500 Sierra Denali Tailgate

Apr 22, 2025 by ADMIN 33 views

2017 GMC Sierra Denali Tailgate Troubleshooting: A Comprehensive Guide

Are you experiencing issues with your 2017 GMC Sierra Denali tailgate? If one side of your tailgate doesn't close or is hard to open, you're not alone. Many owners have reported similar problems, and in this article, we'll delve into the possible causes and solutions to help you resolve the issue.

One side of the tailgate doesn't close: If one side of your tailgate refuses to close, it's likely due to a mechanical issue or a problem with the tailgate's alignment.
Hard to open: If the tailgate is hard to open, it may be due to a stuck or jammed mechanism, or a problem with the tailgate's hinges.
Only one side closes: If only one side of the tailgate closes, it's possible that the other side is damaged or has a mechanical issue.

Misaligned tailgate: If the tailgate is not properly aligned, it can cause issues with closing and opening.
Damaged or worn-out hinges: Over time, the hinges can become damaged or worn out, leading to problems with closing and opening.
Stuck or jammed mechanism: If the tailgate's mechanism is stuck or jammed, it can prevent the tailgate from closing or opening properly.
Loose or damaged tailgate latch: A loose or damaged tailgate latch can prevent the tailgate from closing or opening properly.
Faulty tailgate sensor: Some modern vehicles, including the 2017 GMC Sierra Denali, come equipped with a tailgate sensor that can detect when the tailgate is open or closed. If the sensor is faulty, it can cause issues with the tailgate's operation.

Step 1: Inspect the Tailgate and Hinges

Check the tailgate's alignment: Make sure the tailgate is properly aligned with the vehicle's body.
Inspect the hinges: Check the hinges for any signs of damage or wear.
Check the tailgate latch: Make sure the tailgate latch is secure and not loose.

Step 2: Lubricate the Hinges and Mechanism

Apply lubricant to the hinges: Use a silicone-based lubricant to lubricate the hinges and keep them running smoothly.
Apply lubricant to the mechanism: Use a silicone-based lubricant to lubricate the tailgate's mechanism and keep it running smoothly.

Step 3: Check the Tailgate Sensor

Check the tailgate sensor: If your vehicle is equipped with a tailgate sensor, check to see if it's functioning properly.
Reset the tailgate sensor: If the sensor is faulty, try resetting it to see if it resolves the issue.

Step 4: Replace the Hinges or Mechanism

Replace the hinges: If the hinges are damaged or worn out, replace them with new ones.
Replace the mechanism: If the tailgate's mechanism is stuck or jammed, replace it with a new one.

To prevent issues with your tailgate make sure to:

Regularly inspect the tailgate and hinges: Check the tailgate and hinges regularly to ensure they're in good condition.
Lubricate the hinges and mechanism: Regularly lubricate the hinges and mechanism to keep them running smoothly.
Avoid forcing the tailgate: Avoid forcing the tailgate to close or open, as this can cause damage to the hinges and mechanism.

In conclusion, a malfunctioning tailgate can be frustrating and inconvenient. By following the troubleshooting steps outlined in this article, you should be able to identify and resolve the issue with your 2017 GMC Sierra Denali tailgate. Remember to regularly inspect and maintain your tailgate to prevent issues from arising in the future.

GMC Owner's Manual: Consult your GMC owner's manual for specific instructions on troubleshooting and maintaining your tailgate.
GMC Dealership: If you're unable to resolve the issue yourself, contact a GMC dealership for assistance.
Online Forums: Join online forums and communities to connect with other GMC owners who may have experienced similar issues.

The information provided in this article is for informational purposes only and should not be considered as professional advice. If you're unsure about how to troubleshoot or maintain your tailgate, consult a professional mechanic or GMC dealership for assistance.
2017 GMC Sierra Denali Tailgate Troubleshooting: Q&A

In our previous article, we explored the possible causes and solutions to common issues with the 2017 GMC Sierra Denali tailgate. However, we understand that you may still have questions and concerns about troubleshooting and maintaining your tailgate. In this Q&A article, we'll address some of the most frequently asked questions and provide additional guidance to help you resolve any issues with your tailgate.

Q: What are the most common causes of a malfunctioning tailgate?

A: The most common causes of a malfunctioning tailgate include misaligned tailgate, damaged or worn-out hinges, stuck or jammed mechanism, loose or damaged tailgate latch, and faulty tailgate sensor.

Q: How do I know if my tailgate is misaligned?

A: If your tailgate is misaligned, it may not close or open properly. You can check the tailgate's alignment by looking for any gaps or unevenness between the tailgate and the vehicle's body.

Q: Can I lubricate the hinges and mechanism myself?

A: Yes, you can lubricate the hinges and mechanism yourself using a silicone-based lubricant. However, if you're unsure about how to do it or if the issue persists after lubrication, it's recommended to consult a professional mechanic or GMC dealership.

Q: What are the symptoms of a faulty tailgate sensor?

A: A faulty tailgate sensor may cause the tailgate to malfunction or not close properly. You may also notice an error message on the dashboard indicating a problem with the tailgate sensor.

Q: Can I replace the tailgate sensor myself?

A: Replacing the tailgate sensor can be a complex process and is not recommended for DIY enthusiasts. It's best to consult a professional mechanic or GMC dealership for assistance.

Q: How often should I inspect and maintain my tailgate?

A: It's recommended to inspect and maintain your tailgate regularly, ideally every 1,000 to 5,000 miles, depending on your driving habits and conditions.

Q: What are the consequences of ignoring tailgate issues?

A: Ignoring tailgate issues can lead to further damage to the tailgate, hinges, and mechanism, which can result in costly repairs or even require replacement of the entire tailgate assembly.

Q: Can I use any type of lubricant on my tailgate hinges and mechanism?

A: No, it's recommended to use a silicone-based lubricant specifically designed for automotive applications. Other types of lubricants may damage the hinges and mechanism or attract dirt and debris.

Q: How do I reset the tailgate sensor?

A: The process for resetting the tailgate sensor varies depending on the vehicle's make and model. Consult your GMC owner's manual or contact a GMC dealership for specific instructions.

Q: Can I use a tailgate repair kit to fix my tailgate?

A: A tailgate repair kit may be available for purchase, but it's essential to ensure that the kit is compatible with your vehicle's make and model. Additionally, if the issue is complex or requires specialized tools, it's recommended to consult a professional mechanic or GMC dealership.

We hope this Q&A article has provided you with the information and guidance you to troubleshoot and maintain your 2017 GMC Sierra Denali tailgate. Remember to regularly inspect and maintain your tailgate to prevent issues from arising in the future. If you have any further questions or concerns, don't hesitate to reach out to a GMC dealership or online community for assistance.

GMC Owner's Manual: Consult your GMC owner's manual for specific instructions on troubleshooting and maintaining your tailgate.
GMC Dealership: If you're unable to resolve the issue yourself, contact a GMC dealership for assistance.
Online Forums: Join online forums and communities to connect with other GMC owners who may have experienced similar issues.