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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Transfer Case - NVG 236/246-NP8 (Two-Speed Automatic) Service) >> Diagnostic Information and Procedures >> DTC C0550: Critical Operational Parameter Failed Checksum >> Test Description

Test Description

WARNING: This page is about a different variant/trim than selected.

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

2. Replacement of the transfer case shift control module.

Fig 1: DTC C0550
G01671186Courtesy of GENERAL MOTORS CORP.
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