Operation CHARM
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GMC Truck
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1989
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R 3500 P/U 2WD V8-350 5.7L
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Repair and Diagnosis
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Powertrain Management
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Relays and Modules - Powertrain Management
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Relays and Modules - Computers and Control Systems
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Engine Control Module
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Locations
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Underhood Block View
Underhood Block View
Electronic Control Module.:
Under RH Side Of I/P, Behind Glove Box
Applicable to: R & V Series
Engine Compartment.:
Under RH Side Of I/P, Behind Glove Box
Applicable to: R & V Series w/V8-350/5.7L Engine