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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1343 (Power Seat System) >> Diagnostic Information and Procedures >> Power Seat Inoperative (Without Memory A45) >> Circuit/System Testing >> Seat Adjuster Motor Circuit Test (Without HP2)

Seat Adjuster Motor Circuit Test (Without HP2)

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 harness connector at the seat adjuster assembly.
  2. Connect a test lamp between the appropriate control circuit terminals listed below:
    • Seat horizontal motor terminal 3 and terminal 6
    • Seat front vertical motor terminal 2 and terminal 5
    • Seat rear vertical motor terminal 1 and terminal 4
  3. Ignition ON, command the seat motor Up and Down or Forward and Rearward using the seat adjuster switch. The test lamp should turn ON when commanding the up and down or forward and rearward states.
    • If the test lamp remains OFF for either of the commands, test the control circuits for a short to ground or an open/high resistance. If the circuits test normal, test or replace the seat adjuster switch.
  4. If all circuits test normal, test or replace the seat adjuster assembly.
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