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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1132 (Power Seat System) >> Diagnostic Information and Procedures >> Power Seat Inoperative (with Memory A45) >> Circuit/System Testing >> Seat Adjuster Motor Test

Seat Adjuster Motor Test

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the X3 harness connector at the memory seat module.
  2. 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 memory seat module.
  4. Disconnect the X1 harness connector at the inoperative seat adjuster motor.
  5. Connect a test lamp between control circuit terminal 1 and control circuit terminal 5.
  6. Command the appropriate seat motor Forward/Up and Rearward/Down with a scan tool. The test lamp should turn ON when commanding the Forward/Up and Rearward/Down states.
    • If the test lamp remains OFF during either of the commands, test the control circuits for an open/high resistance. If the circuits test normal replace the MSM.
  7. If all circuits test normal, test or replace the inoperative seat motor.
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