Operation CHARM
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Buick
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1990
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Regal V6-231 3.8L VIN L SFI
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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
Engine - Miss, Hesitation, or Roughness
By Symptom
Customer Interest
Engine - Miss, Hesitation, or Roughness
Driveability
Engine - Miss, Hesitation, or Roughness
Erratic Operation
Engine - Miss, Hesitation, or Roughness
All Technical Service Bulletins
Engine - Miss, Hesitation, or Roughness
Spark Plug - New Design
Cam Sensor - Circuit Code 41 Chart Update