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HOMESERVICE MANUALSCHEVROLET2025SUBURBAN LS, 4WDREPAIR AND DIAGNOSISBODY & FRAMESEATSPOWER SEATSDIAGNOSTIC INFORMATION AND PROCEDURESDTC U3000 (K40 SEAT ADJUSTER MEMORY MODULE)CIRCUIT/SYSTEM VERIFICATION
2025 Chevrolet Suburban LS, 4WD

Circuit/System Verification

2025 Chevrolet Suburban LS, 4WDSECTION Circuit/System Verification
NOTE:

It is not advisable to swap the passenger and driver modules for diagnostics. Doing so will cause DTC U3000 95 to set and inhibit function. The modules are the same part number, and learn their position during programing.

  1. Vehicle in Service Mode.
  2. Verify DTC U3000 is not set.
    • If DTC U3000 is set with symptom byte 95 
    1. Verify the Driver Memory Seat Module and Passenger Memory Seat Module are installed in their correct locations.
    2. Program the K40D Driver Seat Adjuster Memory Module AND the K40P Passenger Seat Adjuster Memory Module.
    3. Verify the DTC does not set.
      • If the DTC sets, replace the Seat Adjuster Memory Module that sets the DTC.
      • Go to next step: If the DTC does not set
    4. All OK.
    • If DTC U3000 is set with any symptom byte EXCEPT 95 
    1. Perform all necessary programming and setup procedures for the Seat Adjuster Memory Module that sets the DTC.
    2. Verify the DTC does not set.
      • If the DTC sets, replace the Seat Adjuster Memory Module that sets the DTC.
      • Go to next step: If the DTC does not set
    3. All OK.
    • Go to next step: If DTC U3000 is not set 
  3. All OK
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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.