If you have a 2008 GMC Sierra and you want to add a key fob, there are several different options available. How to Install a Key Fob on a 2008 GMC Sierra. You can choose to purchase the key fob and install it yourself, or you can have a professional do it for you. Either option is a great way to add a touch of class to your vehicle.
Installing a keyless entry remote
A keyless entry system is a fantastic way to lock and unlock your vehicle without having to carry your keys with you. This feature is now available on many new vehicles. However, there are a few things you should know before you try to install one.
First, you’ll want to know what the right remote can do for your car. In general, there are three major categories of remotes. They range from simple aftermarket units that offer a mile or two of range to more advanced systems that offer the ability to start your car.
Those on the low end may only be able to lock your car. The high-end models can offer a remote start and have other fun tech features.
Before you purchase a remote, you’ll need to check with your car manufacturer. They may be able to tell you what remotes work best with your particular model. You can also ask about the ease of installation and the advertised range.

When you are ready to buy a keyless entry system, you’ll need to find a retailer that specializes in mobile enhancement. These retailers should be experienced and have MECP certificates.
It’s always a good idea to read the manual. Some manufacturers include instructions for programming a key fob. If you have questions about a particular remote, you can contact the manufacturer or your local authorized dealer.
Replacing the battery in the keyless entry remote
If your keyless entry remote is not working properly, you may need to change the battery. It is easy to do and requires only a flathead screwdriver and a little bit of knowledge.
Before you begin the process, you will need to make sure that the remote is not in valet mode. This is a mode that prevents the car from starting after ten minutes. A battery change can interfere with the paired connection.
You will need a second key fob to swap the batteries. The remote will then be able to unlock the vehicle.
Before you start, you should check the coolant temperature in your vehicle. If it is too hot, it could cause the remote start system to work improperly. Also, the engine should be cleaned or the oil pressure checked.
After all these steps are complete, you can replace the keyless entry remote. Make sure to use a CR2032 button cell battery. In most cases, these batteries will cost less than $6.
To replace the battery, you will need to remove the back cover from the key fob. Pry open the cover with a flathead screwdriver. Once you have done so, you will have to snap the two halves together.
When the key fob is reassembled, it will need to be positioned in the same way as before. Be sure to align the positive and negative sides of the battery with the positive and negative sides of the cover.
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Starting a car with a keyless start
The 2008 GMC Sierra came with an optional remote start system. It is a good idea to learn how to use this feature. With a remote start, you can get your engine up to operating temperature before you drive. You can also use this feature to start your cabin and de-ice the windshield.
To use the remote start, first make sure that your car is in ‘Park’. Then, press the brake pedal hard to ensure the release switch is engaged.
Next, place the key fob inside the ignition. Hold the key down for two seconds. If the engine does not start, you need to replace the key fob battery.
After replacing the battery, the key fob functions should work. To do this, follow the directions in the owner’s manual.
Aside from the remote start, you can also access your vehicle’s doors and trunk. You can do this through the myBuick mobile app. Also, you can unlock your doors with the fob.
Remote start is a very useful feature. Using it can reduce the wear and tear on your engine. However, you should be aware that it isn’t always a reliable option. There are several reasons why your remote starter might not function properly.
One of the most common reasons is a bad key fob battery. When this happens, you may not be able to unlock the car. Usually, a dealer will replace it for free. This is a quick and easy task.