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Home >> Chevrolet >> 2006 >> Silverado 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1345 (Power Seat System) >> Diagnostic Information and Procedures >> DTC B1825, B1850, B1860, B2355, B2365, or B2375 >> Circuit/System Testing >> B2355 01, B2355 06, B2365 01, B2365 06, B2375 01 or B2375 06

B2355 01, B2355 06, B2365 01, B2365 06, B2375 01 or B2375 06

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 X2 harness connector at the seat adjuster motor assembly.
  2. Test for less than 2 ohms between the low reference circuit terminal 2 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 MSM.
  3. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal 6 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 MSM.
    • If greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the MSM.
  4. Verify the appropriate scan tool driver seat sensor parameter is less than 1 volt.
    • If greater than the specified range, test the appropriate signal circuit listed below for a short to voltage. If the circuit tests normal, replace the MSM.
      • Seat front vertical position sensor terminal 1
      • Seat rear vertical position sensor terminal 5
      • Seat horizontal position sensor terminal 3
  5. Install a 3A fused jumper wire between the appropriate signal circuit listed below and the 5-volt reference circuit terminal 6. Verify the appropriate scan tool driver seat position sensor parameter is greater than 4.75 volts.
    • Seat front vertical position sensor terminal 1
    • Seat rear vertical position sensor terminal 5
    • Seat horizontal position sensor terminal 3
    • 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 MSM.
  6. If all circuits test normal, test or replace the seat position sensor.
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