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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 833 (Transfer Case - NVG 236/246-NP8) >> Diagnostic Information and Procedures >> DTC C0550: Checksum Test Indicating Invalid Data >> Test Description

Test Description

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The number below refers to the step number on the diagnostic table

  1. This step replaces the transfer case shift control module.
    Fig 1: Diagnostic System Check - DTC C0550
    G01456583Courtesy of GENERAL MOTORS CORP.

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