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Chevrolet
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2002
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Blazer 4D Utility, 4WD, Part Time
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Repair and Diagnosis
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External Pages
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Different variant/trim
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Section 4 (Transfer Case - NVG 236/246-NP8 (Two-Speed Automatic) Service)
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Diagnostic Information and Procedures
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DTC C0550: Critical Operational Parameter Failed Checksum
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Conditions for Clearing the DTC
Conditions for Clearing the DTC
WARNING:
This page is about a different variant/trim than selected.
Replace the transfer case shift control module.
Perform the Transfer Case Diagnostic System Check.