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GMC
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1985
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Value Van P3500, 6.2 J, Standard
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Repair and Diagnosis
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Engine Performance
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Ignition System
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Ignition System - HEI (Federal)
Ignition System - HEI (Federal)
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Description
Operation
Trouble Shooting
Testing - System Tests
Testing Precautions
Engine Will Not Start
Intermittent System Problems
Testing - Component Tests
Testing Precautions
Electronic Module
Integral Ignition Coil
Chevrolet & GMC Only
Pick-Up Coil
Capacitor
Testing - ESC
Notes
Detonation Problems
Poor Engine Performance
Engine Starting Problems
Typical Primary Oscilloscope Patterns
Reading Scope Primary Oscilloscope Pattern
Typical Secondary Oscilloscope Patterns
Secondary Voltage Oscilloscope Patterns:
Overhaul
Disassembly
Reassembly
Wiring Diagrams