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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1316 (Adjustable Pedal System) >> Diagnostic Information and Procedures >> Adjustable Pedals Inoperative (with AN3) >> Circuit/System Testing >> Adjustable Pedal Motor Circuit Malfunction

Adjustable Pedal Motor Circuit Malfunction

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the X3 harness connector at the MSM.
  2. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 5 and ground.
    • If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
  3. Connect the X3 harness connector at the MSM and disconnect the harness connector at the electronic adjustable pedal assembly.
  4. Ignition ON, test for 1.5-2.5 volts between the control circuit terminals listed below and ground:
    • Control circuit terminal 4
    • Control circuit terminal 5
    • If greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the MSM.
    • If less than the specified range, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the MSM.
  5. Connect the test lamp between the control circuit terminal 4 and the control circuit terminal 5.
  6. Command the adjustable pedals to move forward and rearward. The test lamp should illuminate each time the pedals are commanded to move.
    • If the test lamp does not illuminate, replace the MSM.
  7. If all circuits test normal, test or replace the electronic adjustable pedal assembly.
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