Lonsdor K518 Pro Adds Chevrolet Tahoe 2016 Smart Key

How to add a spare smart key to a Chevrolet Tahoe, manufactured in June 2016 using Lonsdor K518 Pro?

These vehicles are often considered 2017 models, as the sixth month is a transitional year for American cars. If the year is a transitional year, the programming procedure and even the key type may differ significantly.

However, in our case, it’s quite simple—regardless of whether this Tahoe is considered a 2016 or 2017. Dealer tools are not required, but a programmer with immobilizer support is still required.

 

Step 1: Read Pin Code

Select IMMO & Remote- Chevrolet- USA/Canada-Tahoe- 2017 to 2019 -Smart key- Read PIN Code.

Read 4-digit pin code successfully.

Step 2: Add smart key

If select Add smart key from this menu path, Lonsdor will report an error Security access verification failed.

An interesting challenge arose regarding the model year. We initially selected 2016 but encountered a communication error. Switching to the previous model year (likely 2015 for this “transitional” 2016 vehicle) resolved the issue immediately. This serves as a vital tip: if you encounter an error when programming a GM vehicle, trying an adjacent model year is a practical first step.

Select Chevrolet- USA-Tahoe-2015 to 2016 year- Program smart key- Add smart key.

Turn on igntion switch.
Put the smart key to be programmed into the key slot, take other keys ourside the car.

The slot here is under the cup holder.
Read current key numbers.

Enter 4-digit pin to access.

Lonsdor k518 pro starts 10-minute configuration of the system process.

The new key was programmed successfully.

Hold down the start button for 12 sec.
Release the start button and wait for 5 sec.

Press and hold the start button until the dashboard turns on.

Press the start button to switch ignition off.
Open and close the driver’s door.
Configuring system.

Key programming is completed.