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Home >> Chevrolet >> 2002 >> Astro Van Passenger, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 807 (Transfer Case - NVG 136-NP4) >> Diagnostic Information and Procedures >> DTC C0376: Greater Than 10 Percent Difference In The Speed Sensor Inputs >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 GMC Safari and 2003 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.

The number(s) below refer to the step number(s) on the diagnostic table.

  1. 2. Determines of DTCs C0300 or C0305 have set.
  2. 3. Helps determine if the transfer case speed sensors are working properly.
  3. 4. Tests to see if the DTC will reset.
  4. 5. Inspects for mismatches and whether speed sensors are wired correctly.
  5. 6. Inspects the transfer case for mechanical failures.
Fig 1: DTC C0376
G01643207Courtesy of GENERAL MOTORS CORP.
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