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Home >> GMC >> 1992 >> Suburban K2500, 5.7 K >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Engine Sensors & Switches >> Vehicle Speed Sensor (Pm Generator)
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Vehicle Speed Sensor (Pm Generator)

Disconnect vehicle speed sensor harness connector (located in transmission/transaxle). Place gear selector in Neutral. Raise vehicle drive wheels off the ground. Turn drive wheels by hand (greater than 3 MPH). Measure AC signal voltage between sensor terminals. Voltage reading should be varying from 0.1-0.5 volt AC as the wheel is turned. If reading is not as specified, replace vehicle speed sensor. If a code is set, refer to appropriate G - TESTS W/ CODES article.