How to Repair The 2015 GMC Yukon Denali Tail Light?

2015 GMC Yukon Denali Tail Lights

The tail light is one of the essential safety car parts. The tail lights are present on the back side of the car and emit a red light. It gives an indication of the presence of the car, protects it from getting smashed, and acknowledges the distance between other cars and yours. Moreover, the tail lights help other vehicle drivers recognize the shape and size of the vehicle. If you have broken tail lights, replace them immediately, Because, broken tail lights can increase the chances of an accident. In which case do you have to replace the 2015 GMC Yukon tail lights?

 Let’s understand the process and why it is essential to change your tail lights.

When Do You Need to Do The Replacement Of The 2015 GMC Yukon Denali Tail Lights?

The Replacement Of The 2015 GMC Yukon Denali Tail Lights

Some common symptom indicates a malfunctioned taillight.

Blown light bulb – If your 2015 Yukon Denali Tail Light has a blown light bulb it will lead to a dysfunctional tail light. A simple replacement is suggested in case of a blown fuse bulb.

Damaged light socket – Light sockets are connected to light bulbs to obtain power. After a certain time, the light sockets may get corroded and may look discolored, which strikes the capacity of turning on the bulbs.

Blast fuse –  Fuses of tail lights are found in the fuse box. If you feel there is a blast in the fuse, then the only option is to replace you cannot repair it. Make sure to get good quality bulbs so that they are 100% effective.

Issues of Wiring or Grounding – If you have already checked the items above, you may face more complex problems. Wiring or Grounding issues are very rare, so you may also need a professional with electrical experience who can solve the problem.

Step Guide for Replacing Tail Light Assembly the 2015 GMC Yukon Denali

Depending upon what type of car you have, the requirements of tools may vary. If the vehicle is providing simple access to the taillight, you may not need any kind of tools.

Even though the most commonly required tools are –

-Safety glasses



-All size sockets


The process to Remove and Install Tail Lights?

As we know, the tail lights are an essential safety part of a car. We should also know all the necessary steps for removing the old and damaged tail lights and installing the new taillights in the 2015 GMC Yukon Denali. 

How to Remove Tail Light Assembly?

Let’s discuss the steps for removing the damaged tail lights of the 2015 GMC Yukon Denali.

1. The first and most important step is to wear safety glasses.

2. Detach the negative battery cable.

3. According to the factory repair instructions, if required, remove the trim panel or the rear bumper. This is important to reach the fasteners holding the tail light assembly in place. The procedure requires removing a number of screws and clips in order to open the trim panel or the bumper.

4. Remove the screws or the bolts holding the tail light assembly after you have direct access to it.

5. Remove the tail light assembly from the car by pulling it out. Remember that the assembly may still be secured in retainer clips. The assembly must be removed gently by the clamps as you draw it in your direction.

6. The electrical connectors from the assembly’s back should be removed.

7. New bulbs are included in some Tail Light Assembly Replacements. If not, you’ll need to take out the old sockets and bulbs so they may be reused. Usually, to do this, you have to unscrew the bulb socket from the tail light assembly by rotating it anticlockwise.

How to Install Tail Light Assembly?

After removing the damaged tail lights, you need to install new taillights on the 2015 GMC Yukon Denali. Here are the following steps for installing the 2015 GMC Yukon Denali tail light.

1. Verify that the old and new tail light assemblies have the same design by comparing the two.

2. If necessary, replace the tail light assembly’s sockets and bulbs.

3. Rejoin the electrical connectors.

4. Install the tail light assembly. Make sure it fits into any retainer clips that are attached to the vehicle’s back.

5. Reinstall the mounting bolts or nuts for the tail light assembly and snugly tighten them down. Avoid over-tightening. You can use a torque wrench to tighten the fasteners to the manufacturer’s specifications and, if necessary, refer to the factory repair information.

6. As needed, rejoin the trim panel or the back bumper.

7. Rejoin the negative battery cable.

How Much Does It Cost to Replace The 2015 GMC Yukon Denali Tail Light?

The cost for replacement may vary depending on the model and making of the vehicle. It also depends on where you go or whom you hire for repair. If the tail light bulb gets broken, generally, it costs between $20-$100 for repair. If it is all about the wiring, the lens, or a new tail light assembly completely, the price range is between $200-$2000. If the wiring of the tail light is damaged, a mechanic can fix it within an hour for $70-$120. The tail light lens can cost between $150-$800. A tail light consists of two types of bulbs: LED lights and Halogen lights. A halogen light set costs between $4-$6, and the LED tail lights costs between $4-$6 at an auto part store or in a mechanic’s store.


How much does it cost to fix the 2015 GMC Yukon Denali Tail Light?

Tail light costs around $200-$2000. It also depends on the model and making of the vehicle.

Can you repair the 2015 GMC Yukon Denali Tail Light yourself?

Repairing tail lights, yourself is not such a big task.  You could damage your vehicle if you don’t have experience.

Should you replace both the tail lights if one is broken?

Considering that they are both the same age and level of deterioration, it is also advisable to replace the headlamp capsules, brake light, and taillight bulbs in pairs at the same time.

Can you replace a faulty tail-light pair on your own?

A class action complaint says that General Motors should have recalled 2017-2019 GMC Yukon cars long ago because defective tail light components reportedly cause brake lights to malfunction.


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