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HOMESERVICE MANUALSCHEVROLET2025SUBURBAN LS, RWDREPAIR AND DIAGNOSISBODY & FRAMESEATSPOWER SEATSDIAGNOSTIC INFORMATION AND PROCEDURESMEMORY SEAT FEATURE MALFUNCTIONCIRCUIT/SYSTEM TESTING
2025 Chevrolet Suburban LS, RWD

Circuit/System Testing

2025 Chevrolet Suburban LS, RWDSECTION Circuit/System Testing
  1. Ignition/Vehicle OFF, disconnect the connector at the S47D Front Seat Adjuster Memory Switch - Driver.
  2. Test for less than 10 Ω between the low reference circuit terminal 2 and ground.
    • If 10 Ω or greater 
    1. Test circuit 1151 for an open/high resistance.
      • If an open/high resistance is found, repair the fault on the circuit.
      • Go to next step: If an open/high resistance is not found
    2. Repair the open/high resistance in the ground connection.
    • Go to next step: If less than 10 Ω 
  3. Ignition ON/Vehicle in Service Mode.
  4. Press a power seat switch, to wake up the K40D Driver Seat Adjuster Memory Module.
  5. Test for 9 V or greater between signal circuit terminal 4 and ground.
    • If less than 9 V 
    1. Test circuit 614 for a short to ground.
      • If a short to ground is found, repair the fault on the circuit.
      • Go to next step: If a short to ground is not found
    2. Test circuit 614 for an open/high resistance.
      • If an open/high resistance is found, repair the fault on the circuit.
      • Go to next step: If an open/high resistance is not found
    3. Replace the K40D Driver Seat Adjuster Memory Module.
    • Go to next step: If 9 V or greater 
  6. Test for 4.8 - 5.2 Volts between signal circuit terminal 3 and ground.
    • If less than 4.8 V 
    1. Test circuit 615 for a short to ground.
      • If a short to ground is found, repair the fault on the circuit.
      • Go to next step: If a short to ground is not found
    2. Test circuit 615 for an open/high resistance.
      • If an open/high resistance is found, repair the fault on the circuit.
      • Go to next step: If an open/high resistance is not found
    3. Replace the K40D Driver Seat Adjuster Memory Module.
    • If greater than 5.2 V 
    1. Test circuit 615 for a short to voltage.
      • If a short to voltage is found, repair the fault on the circuit.
      • Go to next step: If a short to voltage is not found
    2. Replace the K40D Driver Seat Adjuster Memory Module.
    • Go to next step: If between 4.8 - 5.2 V 
  7. Test or replace the S47D Front Seat Adjuster Memory Switch - Driver.
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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.