2008 Chevrolet TrailBlazer 6.0 H, AWDFACTORY OEM SERVICE PROCEDURE

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the adjustable pedal assembly.
  2. Test for less than 1.0 ohm of resistance between the low reference circuit terminal 3 and ground.
    • If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the memory seat module.
  3. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal 1 and ground.
    • If less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the memory seat module.
    • If greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the memory seat module.
  4. Verify the scan tool pedal position parameter is less than 0.45 volt.
    • If greater than the specified range, test the signal circuit terminal 2 for a short to voltage. If the circuit tests normal, replace the memory seat module.
  5. Install a 3-amp fused jumper wire between the signal circuit terminal 2 and the 5-volt reference circuit terminal 1. Verify the scan tool pedal position parameter is greater than 4.55 volts.
    • If less than the specified range, test the signal circuit for short to ground or an open/high resistance. If the circuit tests normal, replace the memory seat module.
  6. If all circuits test normal, replace the adjustable pedal assembly.
Factory Service Tools

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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.

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