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1994
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C3500 HD 7.4 N, Automatic
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Engine Controls - Basic Testing - Gasoline
Engine Controls - Basic Testing - Gasoline
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Model Identification
Introduction
Preliminary Inspection & Adjustments
Visual Inspection
Mechanical Inspection
Compression
Exhaust System Backpressure
Diagnosis
A-3, No-Start Diagnosis
Notes
Engine Controls - Basic Testing - Gasoline
Definition
No Start - Engine Cranks Okay
General Inspection
Ignition System
Fuel System (TBI)
Fuel System (4.3L CPI)
A-7, Basic Fuel System Checks
Fuel System Pressure Relief
Model 220 TBI Unit
CPI (4.3L)
Fuel System Pressure Test
Notes
TBI
Field Service Mode Check
C-4, Basic Ignition System Checks
HEI-Est Distributor
Notes
Spark
Ignition Coil Power Source
Ignition Coil Resistance
Distributor Pick-Up Coil Short & Resistance Checks
Tach Pulse (RPM) Signal
Idle Speed & Ignition Timing
Diagnostic Circuit Check
Notes
A-1, Malfunction Indicator Light (Mil) Inoperative
A-2, Mil Always On Or Won't Flash Code 12
Summary
Wiring Diagrams
4.3L, 5.0L & 5.7L With A/T
4.3L & 7.4L With M/T
5.0L & 5.7L With M/T
7.4L With A/T