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Home >> GMC >> 2002 >> C3500 HD 8.1 G, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 69 (Automatic Transmission Diagnosis - 4L80-E (Gasoline)) >> Diagnostic Tests >> DTC P0717: Input Speed Sensor Circuit - Low Input >> Test Description

Test Description

WARNING: This page is about a different car, the 2002 GMC Cab & Chassis Sierra and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The numbers listed below refer to step numbers in the diagnostic procedure:

  1. 3

    This step tests for proper circuit operation up to the PCM connections. Remove the fuel pump relay to eliminate a flooding condition during this step.

  2. 5

    This step tests for proper operation of the ISS.

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