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GMC Truck
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2003
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S15/T15 Sonoma P/U 2WD V6-4.3L VIN X
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Repair and Diagnosis
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Powertrain Management
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Tune-up and Engine Performance Checks
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Compression Check
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Specifications
Compression Check: Specifications
Compression Pressure Limit
689 kPa (100 psi)
The lowest reading cylinder should not be less than
70 percent
of the highest.