Operation CHARM
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GMC Truck
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1988
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Safari Van M L4-151 2.5L
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Repair and Diagnosis
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Instrument Panel, Gauges and Warning Indicators
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Speedometer Head
Speedometer Head
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Testing and Inspection
Symptom Related Diagnostic Procedures
Diagnosis By Symptom - With Electronic Cluster
Cluster Display Does Not Switch Between English and Metric
Cluster Display Does Not Light
Speedometer and Odometers Do Not Operate
Cluster Display Doesn't Switch Between Total and Trip Odometer
Trip Odometer Does Not Reset
Diagnosis By Symptom - Without Electronic Cluster
Component Tests and General Diagnostics
Technical Service Bulletins
