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Home >> Chevrolet >> 2018 >> Suburban 3500 HD LT >> Repair and Diagnosis >> External Pages >> Different car >> Section 21 (Automatic Transmission - 10L80 (MF6) - Diagnostic Information And Procedures) >> Diagnostic Information And Procedures >> DTC P0601, P0602, P0603, P0604, P0606, P062F, P16F3, P16F4 Or P16FB: Control Module Memory >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Cadillac Escalade ESV, and 2018 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition - On / Vehicle - In Service Mode
  2. Verify DTC P0602 is not set.
    • If the DTC is set 
    1. Perform all necessary programming and setup procedures for the control module:K71 Transmission Control Module
    2. Verify the DTC does not set.
      • If the DTC sets - Replace the component:K71 Transmission Control Module
      • If the DTC does not set
    3. All OK.
    • Go to next step: If the DTC is not set 
  3. Ignition/Vehicle & All vehicle systems - Off
  4. Disconnect the electrical connector: K71 Transmission Control Module
  5. Verify a condition does not exist with the component: K71 Transmission Control Module@Wiring Harness Connector - Defective/Loose/Poor Connection/Visible Damage
    • If a condition exists 

      Repair or replace as necessary.

    • Go to next step: If no condition exists 
  6. Connect the electrical connector:K71 Transmission Control Module
  7. Ignition - On / Vehicle - In Service Mode
  8. Clear the DTCs.
  9. Ignition/Vehicle & All vehicle systems - Off
  10. Ignition - On / Vehicle - In Service Mode
  11. Verify DTC P0601, P0603, P0604, P0606, P0607, P062F, P16F3, P16FB is not set.
    • If the DTC is set 

      Replace the component: K71 Transmission Control Module

    • Go to next step: If the DTC is not set 
  12. All OK.
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