Circuit/System Verification

2025 Chevrolet Trailblazer ACTIV, 4WDSECTION Circuit/System Verification
NOTE:

This condition may be caused by low vehicle battery voltage. If the battery is not sufficiently charged (above 10 volts), the system will have difficulties detecting the transmitter and the NO REMOTE DETECTED message will be displayed. Correct the low battery voltage condition to eliminate this condition. For transmitter battery replacement refer to Remote Keyless Entry (RKE) System Operation in the owner's manual

  1. Verify that DTC B3119, B3120, B3121, B3122, B3123, or B3124 is not set.
    • Go to next step: If none of the DTCs are set 
  2. Lock the vehicle using the keyless entry transmitter.
  3. Verify that each door unlocks and opens by approaching the vehicle with a valid transmitter and operating their respective exterior door handle button.
    • Go to next step: If both doors unlock/unlatch and open 
  4. Verify the vehicle starts with the transmitter located in the key pocket/slot.
    • Go to next step: If the vehicle starts 
  5. Verify the NO REMOTE DETECTED message is not displayed on the DIC while attempting to start the vehicle, placing the keyless entry transmitter in various locations within the vehicle interior at each start attempt. The vehicle should start.
    • If the NO REMOTE DETECTED message is displayed at any time 

      Refer to Circuit/System Testing.

    • Go to next step: If the NO REMOTE DETECTED message is not displayed and the vehicle starts 
  6. Inspect for any sources of RF interference such as cell phone chargers, power supplies, etc. that would interrupt transmitter and antenna communication. If inspection does not reveal any items causing RF interference, discuss with the customer the conditions or location where the NO REMOTE DETECTED condition occurs. Discuss any devices that are normally kept in the vehicle, such as a laptop or cell phone charger, which may have been removed when the vehicle was brought in for service. It may be necessary to explain to the customer how RF interference degrades the performance of the system.
RENDER: 1.0x

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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.