Operation CHARM
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GMC Truck
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1992
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Safari Van M V6-262 4.3L VIN Z
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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 or Spark Knock On Acceleration
PROM - Sustained Detonation/Knock
Engine - Miss, Hesitation, or Roughness
By Symptom
Customer Interest
PROM - Detonation or Spark Knock On Acceleration
PROM - Sustained Detonation/Knock
Engine - Miss, Hesitation, or Roughness
Driveability
PROM - Sustained Detonation/Knock
Engine - Miss, Hesitation, or Roughness
Erratic Operation
Engine - Miss, Hesitation, or Roughness
Noise
PROM - Detonation or Spark Knock On Acceleration
PROM - Sustained Detonation/Knock
All Technical Service Bulletins
PROM - Detonation or Spark Knock On Acceleration
PROM - Sustained Detonation/Knock
Engine - Miss, Hesitation, or Roughness
Spark Plugs - New Design