If you’re a Chevy Express owner, you may find yourself in a situation where you need to program a second key for your vehicle. Fortunately, this process is relatively simple and can be completed in a matter of minutes. In this article, we’ll provide you with step-by-step instructions on how to program a 2nd key Chevy Express 2016 without a title.
Before you begin, you’ll need to gather a few items. These include a new key, a Phillips head screwdriver, and a flat head screwdriver. Once you have all of your materials, you can proceed with the following steps:
1. Insert the new key into the ignition and turn it to the “ON” position.
2. Within 10 seconds, press and hold the “UNLOCK” button on the key fob for 10 seconds.
3. Within 20 seconds, release the “UNLOCK” button and press and hold the “LOCK” button for 10 seconds.
4. Release the “LOCK” button and turn the key to the “OFF” position.
5. Remove the key from the ignition and insert it again.
6. Turn the key to the “ON” position and check to see if the key fob is working properly.
7. If the key fob is working properly, remove the key from the ignition and repeat steps 1-6 for any additional key fobs that you need to program.
Preparation: Gathering Necessary Tools and Materials
When undertaking the task of programming a second key for a 2016 Chevy Express, it is crucial to gather the necessary tools and materials to ensure a successful outcome. The following items are essential for the process:
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Original Factory Key: The original key provided with the vehicle is required to retrieve the necessary programming data. Verify that the key is in good working condition and readily accessible.
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New Unprogrammed Key: A blank, unprogrammed key is required to receive the programming information. Ensure that the new key is compatible with the vehicle’s ignition system to prevent any compatibility issues.
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Tech 2 Diagnostic Tool: The Tech 2 diagnostic tool is a specialized device that communicates with the vehicle’s electronic control modules and allows for key programming. If you do not possess a Tech 2 tool, it is advisable to locate a qualified mechanic who has the necessary equipment.
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Computer with Internet Access: In some cases, you may need to access online resources or update the Tech 2 software before programming the key. Having a computer with internet access on hand will ensure you have the latest information and software updates.
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Safety Glasses and Gloves: Always wear appropriate safety equipment, including safety glasses and gloves, when working with electrical components or diagnostic tools to protect yourself from any potential hazards.
Locating the Programming Port
Step 2: Identifying the Programming Port
The programming port is typically a small, rectangular opening hidden behind a cover or trim piece. To locate it:
- Open the driver’s side door and remove the lower trim panel near the door hinge.
- Behind the trim panel, you will find a 6-pin programming port connector (DLC3). It may be covered by a black or gray rubber plug.
- If you have a keyless entry system, the programming port may be located behind the glove box. Remove the glove box by pressing on the sides and pulling it towards you.
Refer to the table below for the specific location of the programming port based on your vehicle’s model and trim level:
| Model | Trim Level | Programming Port Location |
|---|---|---|
| Chevy Express | Base, LS, LT | Behind driver’s side door hinge, under trim panel |
| Chevy Express | LTZ | Behind glove box |
Connecting the Programming Tool
The programming tool must be connected to the vehicle’s OBD-II port. This port is typically located under the dashboard, near the steering wheel. Once the programming tool is connected, turn on the ignition but do not start the engine.
The programming tool will then prompt you to enter the vehicle’s VIN (Vehicle Identification Number). Once the VIN is entered, the programming tool will access the vehicle’s electronic control module (ECM) and begin the programming process.
Tips for Connecting the Programming Tool
- Make sure that the programming tool is compatible with the vehicle’s make and model.
- Use a high-quality OBD-II cable.
- Connect the programming tool to the OBD-II port securely.
- Turn on the ignition but do not start the engine.
- Be patient, as the programming process can take several minutes.
Troubleshooting Connection Issues
| Error Message | Solution |
|---|---|
| “No connection to ECM” | Check the OBD-II cable and connection, and make sure that the programming tool is compatible with the vehicle. |
| “VIN not recognized” | Enter the VIN carefully and make sure that it is correct. |
| “Programming failed” | Try restarting the programming process, and make sure that the ignition is not turned off during the process. |
Entering Programming Mode
To enter programming mode for a 2016 Chevy Express, follow these steps:
- Insert the original master key into the ignition and turn it to the “ON” position.
- Quickly turn the key to the “OFF” position and remove it.
- Within 10 seconds, insert the new key you want to program into the ignition.
- Turn the key to the “ON” position and hold it there for a specific amount of time, depending on the year model of your Express.
Programming Time by Year Model
| Year Model | Programming Time |
|---|---|
| 2016 | 10-15 seconds |
If done correctly, the vehicle will enter programming mode and the security indicator light will start flashing.
Selecting the Vehicle
Before embarking on the key programming process, it’s crucial to select the appropriate vehicle. Ensure that you have identified the correct year, make, and model of your Chevy Express. This is essential to guarantee compatibility with the programming procedure and the availability of necessary resources. Additionally, verify the number of keys that are already programmed for your vehicle, as this may influence the steps involved in programming the second key.
Here’s a table summarizing the compatibility of this key programming procedure with different Chevy Express models:
| Year | Make | Model | Compatibility |
|---|---|---|---|
| 2016 | Chevrolet | Express | Compatible |
Programming the Key Fob
1. Gather Your Materials:
You will need two key fobs for your Chevy Express 2016, as well as a working key that is already programmed to the vehicle.
2. Enter the Vehicle:
Sit in the driver’s seat and close the door.
3. Turn the Ignition:
Insert the working key into the ignition and turn it to the “On” position, but do not start the engine.
4. Press the Unlock Button:
On the working key fob, press and hold the unlock button for approximately five seconds. The door locks will cycle, indicating that the vehicle is in programming mode.
5. Press the Lock and Unlock Buttons:
On the new key fob, press and hold both the lock and unlock buttons simultaneously for approximately five seconds. The door locks will cycle again, indicating that the new fob has been programmed.
6. Repeat for Additional Fobs:
If you have additional key fobs to program, repeat steps 4 and 5 for each fob. Ensure that you wait at least 10 seconds between programming each fob to allow the vehicle’s system to process the new information.
| Step | Action |
|---|---|
| 1 | Insert working key into ignition and turn to “On” position. |
| 2 | Press and hold unlock button on working key fob for 5 seconds. |
| 3 | Press and hold lock and unlock buttons on new key fob for 5 seconds. |
| 4 | Repeat steps 2 and 3 for additional fobs, waiting 10 seconds between each. |
Verifying Successful Programming
Once the programming process is complete, it’s crucial to verify if the new key has been successfully programmed. Here are the steps involved:
- Insert the new key into the ignition and turn it to the “ON” position, but don’t start the engine. The security light should remain illuminated for approximately 10 seconds.
- Turn the ignition key to the “OFF” position and remove it from the ignition.
- Wait for 15 seconds, then reinsert the new key and turn it to the “ON” position. The security light should turn off.
- Start the engine. The vehicle should start normally.
- Turn the engine off and remove the new key.
- Repeat steps 1-5 with the original key to ensure both keys are programmed correctly.
Additional Verification Steps:
- Lock and unlock the vehicle using the new key. The key fob buttons should function as expected.
- Use the new key to open the trunk or tailgate. The key should be able to open the rear compartment.
- Drive the vehicle for a short distance. The vehicle should perform normally with the new key.
If any of these additional verification steps fail, it indicates that the key programming was not successful and further troubleshooting may be necessary.
Removing the Programming Tool
1. Once the programming is complete, turn the ignition switch to the “OFF” position.
2. Locate the programming tool, which is usually a small black or gray device with a button or switch on it.
3. Unplug the programming tool from the OBD-II port.
4. Store the programming tool in a safe place for future use.
Additional Notes:
| Caution: | Do not remove the programming tool while the ignition switch is in the “ON” position, as this could damage the vehicle’s electrical system. |
|---|---|
| Tip: | If you have multiple keys to program, it is generally more convenient to use a programming tool that can handle multiple keys simultaneously. |
Additional Security Considerations
When programming a 2nd key for your Chevy Express 2016, it’s crucial to consider additional security measures to protect your vehicle from unauthorized access.
9. Immobilizer System
The 2016 Chevy Express uses a passcode-based immobilizer system that prevents the engine from starting without the proper key. When the key is inserted into the ignition, the immobilizer chip transmits a unique code to the engine control module (ECM), which then verifies it against a stored code. This system provides an additional layer of security, ensuring that only authorized keys can start the vehicle.
| Component | Function |
|---|---|
| Key fob | Transmits unique passcode to ECM |
| Immobilizer chip | Embedded in key fob and transmits passcode |
| Engine control module (ECM) | Stores and verifies passcode |
| Ignition switch | Reads passcode from key |
If the immobilizer system detects an unauthorized key, it will prevent the engine from starting, even if the key is able to unlock the vehicle’s doors.
Note: It’s important to keep a spare key for your Chevy Express 2016 in a secure location. In the event that you lose your primary key, the spare key will allow you to start and drive your vehicle.
Prepare the Vehicle and Keys
Ensure the vehicle is in park and the parking brake is engaged. Remove the first key from the ignition and insert the second key.
Enter Programming Mode
Turn the ignition to the “ON” position without starting the engine and wait for 10 minutes. Then, turn the ignition to the “OFF” position and remove the key.
Start the Programming Process
Insert the second key and turn the ignition to the “ON” position. Turn the ignition off and remove the key. Repeat this process four times.
Program First Key
Insert the original key and turn the ignition to the “ON” position. Turn the ignition off and remove the key. Repeat this process four times.
Program Second Key
Insert the second key and turn the ignition to the “ON” position. Turn the ignition off and remove the key. Repeat this process four times.
Verify Programming
Remove both keys from the ignition and wait for 10 minutes. Then, insert the original key and start the engine. Turn the engine off and remove the key. Insert the second key and start the engine. Turn the engine off and remove the key.
Troubleshooting Common Programming Issues
1. Key Not Recognized
Ensure the key is fully inserted into the ignition and the battery in the key fob is not dead. Clean the ignition contacts if necessary.
2. Programming Interrupted
Make sure the programming steps are followed exactly. If interrupted, start the process over from the beginning.
3. Engine Will Not Start
Verify the VIN number of the vehicle matches the key being programmed. Ensure the key is properly cut and programmed for the specific vehicle. Consider replacing the ignition switch.
4. Security Light Blinking
The vehicle may need to be relearned by the key. Follow the reprogramming steps again, waiting for the security light to turn off before removing the key.
5. Keyless Entry Not Working
The keyless entry system may need to be reprogrammed separately. Consult the vehicle’s owner’s manual for specific instructions.
6. Multiple Keys Programmed
Only two keys can be programmed to a vehicle at a time. To program additional keys, the previous keys must be erased from the memory and reprogrammed.
7. Factory Reset
If all else fails, a factory reset may be necessary. This will erase all programmed keys and require all keys to be reprogrammed.
8. Locksmith Assistance
If you are unable to resolve the issue yourself, contact a qualified locksmith or automotive technician.
9. ECM Reprogramming
In rare cases, the Engine Control Module (ECM) may need to be reprogrammed by a dealer or automotive technician.
10. Wiring Issues
There may be a fault in the wiring harness that connects the ignition and keyless entry systems. Inspect the wiring for damage or loose connections.
How to Program a 2nd Key for Chevy Express 2016
You will require: A newly cut key for your Chevy Express and your original key. The programming procedure is as follows:
1. Insert the original key into the ignition and turn it to the “ON” position without starting the engine.
2. Immediately remove the original key and insert the newly cut key within 10 seconds.
3. Turn the newly cut key to the “ON” position and leave it there for 10 minutes.
4. Turn the newly cut key to the “OFF” position and remove it from the ignition.
Your second key is now programmed for your Chevy Express.
