Operation CHARM
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Chevrolet
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1989
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Beretta L4-121 2.0L
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Repair and Diagnosis
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Powertrain Management
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Ignition System
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Technical Service Bulletins
Ignition System: Technical Service Bulletins
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Customer Interest
PROM - Detonation, Decel Pop-Backs, Hesitation & Stall
Engine - Miss, Hesitation, or Roughness
Engine Controls - Crankshaft Sensor Replacement Caution
By Symptom
Customer Interest
PROM - Detonation, Decel Pop-Backs, Hesitation & Stall
Engine - Miss, Hesitation, or Roughness
Engine Controls - Crankshaft Sensor Replacement Caution
Driveability
PROM - Detonation, Decel Pop-Backs, Hesitation & Stall
Engine - Miss, Hesitation, or Roughness
Engine Controls - Crankshaft Sensor Replacement Caution
Erratic Operation
Engine - Miss, Hesitation, or Roughness
All Technical Service Bulletins
PROM - Detonation, Decel Pop-Backs, Hesitation & Stall
Ignition - Correct Use of Spark Tester
Engine - Miss, Hesitation, or Roughness
Engine Controls - Crankshaft Sensor Replacement Caution