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Home >> GMC >> 1995 >> Forward Control 7.4 N >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Tests W/Codes - 4.3L >> Trouble Code Charts >> Code 43, Knock Sensor W/O Spark Module (Dual Sensors) >> Notes

Code 43, Knock Sensor W/O Spark Module (Dual Sensors): Notes

NOTE: Test numbers refer to test numbers on diagnostic chart.
  1. Tests for 5-volt signal applied by control module.
  2. An improperly installed sensor can prevent knock sensor from grounding to block.
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