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WASTEGATE Solenoid

Disconnect wastegate solenoid connector and vacuum hose. Apply 12-volt power source to solenoid. Using a hand-held vacuum pump, apply vacuum to solenoid. A clicking noise should be heard from wastegate solenoid and vacuum should flow through valve. If these conditions are not met, solenoid is defective.

Fig 1: 2.0L Sunbird Turbocharger System
G90G13207Courtesy of GENERAL MOTORS CORP.
Fig 2: 3.1L Grand Prix Turbocharger System
G90H13208Courtesy of GENERAL MOTORS CORP.
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