Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2025TRAILBLAZER ACTIV, 4WDREPAIR AND DIAGNOSISBODY & FRAMEDOOR LOCKSREMOTE FUNCTIONSREPAIR INSTRUCTIONSREMOTE CONTROL DOOR LOCK AND THEFT DETERRENT TRANSMITTER PROGRAMMINGADDING KEYS
2025 Chevrolet Trailblazer ACTIV, 4WD
Adding Keys
2025 Chevrolet Trailblazer ACTIV, 4WDSECTION Adding Keys
NOTE:
- A minimum of two transmitters must be learned during this procedure. The vehicle will not exit the learn mode until at least a second transmitter is learned.
- This procedure may be used with or without existing learned keys being present.
- A total of eight keys and transmitters maybe be learned to a single vehicle.
- This procedure will only learn the vehicle key information. This procedure will not learn any immobilizer information between the body control module (BCM) and engine control module (ECM).
- If the battery voltage is low, charge the battery before continuing with the procedure.
- Connect a scan tool to the vehicle and access SPS.
- Ensure that all power consuming devices are turned OFF on the vehicle.
- Select the SPS application and follow the on-screen instructions.
- Select Reprogram ECU.
- Select IMMO Immobilizer Learn.
- Select the Program Transponder & Remote Key function.
- At multiple times during the learn procedure, SPS will instruct you to turn the ignition to the run position. Make sure the vehicle is actually in the run mode before continuing on the SPS terminal. If the ignition is not in run mode, the learn procedure will fail.
- For the transmitter pocket location refer to Keyless Entry Transmitter Pocket Location
- Follow the on-screen instructions.
- After the SPS procedure has completed, press and hold the ignition mode switch for 15 seconds.
- With a scan tool, clear any DTCs.
NOTE:
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.