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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1699 (Automatic Transmission - 4T45-E - DTC P0218 To DTC P0961) >> DTC P0787 or P0788 (Hybrid) >> Component Testing (Hybrid)

Component Testing (Hybrid)

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the automatic transmission (AT) inline 20-way connector at the transmission.
  2. Install J 44152  on the transmission side of the AT inline 20-way connector.
  3. Test for 15-25 ohms of resistance between the control terminal F and the ignition terminal E of the transmission.
    • If not within the specified range, test the circuits for a short to ground or an open/high resistance. If a circuit is shorted or open replace the internal transmission harness, if the circuits test normal, replace the 4-3 downshift solenoid.
  4. Test for infinite resistance between each terminal and the transmission housing/case.
    • If not the specified value, test the circuits for a short to ground or an open/high resistance. If a circuit is shorted replace the internal transmission harness, if the circuits test normal, replace the 4-3 downshift solenoid.
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