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HOMESERVICE MANUALSCHEVROLET2006SUBURBAN K2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1016 (ADJUSTABLE PEDAL SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESADJUSTABLE PEDALS INOPERATIVE (WITH MEMORY)CIRCUIT/SYSTEM TESTING
2006 Chevrolet Suburban K2500, 6.0 U

Circuit/System Testing

2006 Chevrolet Suburban K2500, 6.0 USECTION Circuit/System Testing
WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Adjustable Pedal Switch Circuit Test

  1. Disconnect the MSM connectors C6 and C7 and verify that none of the adjuster switch inputs are displayed as Active.
    • If any of the switch inputs are Active, replace the MSM.
  2. Verify that battery voltage is not present at the affected switch signal circuit terminal while the switch is inactive.
    • If battery voltage is present while the switch is not pressed test the switch signal circuit for a short to voltage. If the circuit tests normal replace the adjustable pedal switch.
  3. Verify that battery voltage is present at the affected switch signal circuit terminal while pressing the switch.
    • If battery voltage is not present while the switch is pressed, repair the switch supply circuit for an open/high resistance or short to ground. If the circuit tests normal replace the adjustable pedal switch.
  4. If the circuits test normal replace the MSM.

Motor Control Circuit Test

  1. Disconnect the MSM connector C3.
  2. Verify that a test lamp illuminates when connected from the high current battery supply circuit terminal 5 to ground.
    • If the test lamp does not illuminate, repair the high current battery supply circuit for an open or short to ground.
  3. Connect the MSM connector C3 and disconnect the adjustable pedal motor connector.
  4. Connect a test lamp across the motor control circuit terminals.
  5. Verify that the test lamp illuminates while the adjustable pedal switch is pressed in both directions.
    • If the test lamp does not illuminate, repair the motor control circuits for an open/high resistance or short to ground. If the circuits test normal replace the MSM.
  6. If the circuits test normal replace the brake pedal assembly.
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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
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