LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1379 (Automatic Transmission - ALLISON - DTC P0880 To DTC P2771) >> DTC P0880 >> Circuit/System Testing

Circuit/System Testing

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.
    NOTE: You must perform the Circuit/System Testing first.
  1. Ignition OFF, disconnect the harness connector at the TCM.
  2. Ignition OFF, test for less than 3 ohms between ground circuit terminal 9 and battery ground and between ground circuit terminal 69 and battery ground.
    • If greater than the specified range, repair the affected ground circuit.
  3. Ignition OFF, verify that a test lamp illuminates between the battery B+ circuits terminal 10 and ground and terminal 70 and ground.
    • If the test lamp does not illuminate, repair the affected B+ circuit.
    • If circuits test normal, replace the TCM.
scientia non olet · About LEMON Manuals