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Home >> GMC Truck >> 1999 >> S15/T15 Sonoma P/U 2WD V6-4.3L VIN X >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Idle Speed/Throttle Actuator - Electronic >> Testing and Inspection >> Without Scan Tool

Without Scan Tool

1. Start the engine for 20 seconds.
2. Turn OFF the ignition for 10 seconds.
3. Start the engine.
4. Check for the proper idle speed.

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