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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 767 (Transfer Case - NVG 136-NP4 (1-Speed Automatic)) >> Diagnostic Information & Procedures >> DTC C0310 >> Test Description

Test Description

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

The numbers below refer to the step numbers on the diagnostic table.

  1. 2)  - Tests the motor circuit for a current malfunction.
  2. 3)  - Tests Motor Control A for an open circuit.
  3. 4)  - Tests Motor Control B for an open circuit.
  4. 5)  - Tests for an open across the motor windings.
Fig 1: DTC C0310 Diagnosis
G02502158Courtesy of GENERAL MOTORS CORP.
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