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GMC Truck
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1999
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S15/T15 Sonoma P/U 4WD V6-4.3L VIN X
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Repair and Diagnosis
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Powertrain Management
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Emission Control Systems
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Evaporative Emissions System
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Description and Operation
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Evaporative (EVAP) Emissions System Diagnostic Tests
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Diagnostic Tests
Diagnostic Tests
The control module performs diagnostic tests in order to monitor the performance of the Evaporative
(
[1]
[2]
EVAP
)
emissions system. These test are as follows: