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Chevrolet
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1990
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Caprice Base, 5.7 7
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Repair and Diagnosis (Single Page)
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Engine Performance
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System
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Engine Controls - Tests W/Codes - 4.3L TBI
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Pcm/BCM Code Charts
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Code 43, ESC Error, W/O ESC Module
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Notes
Code 43, ESC Error, W/O ESC Module: Notes
NOTE:
Test numbers refer to numbers on diagnostic chart. If an audible knock is heard from engine at idle, repair internal engine problems before proceeding.