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Home >> GMC >> 1992 >> Forward Control 5.7 K, Standard >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Diagnosis - A/T >> Testing & Diagnosis (Exc. REATTA, Riviera, TORONADO & TROFEO) >> Diagnostic Tools

Diagnostic Tools

NOTE: On all models, diagnosis of the TCC system may be performed by following the appropriate CHART C-8 for the transmission/engine application in question.

When utilizing C-8 charts, specific tools which may be required are a tachometer, test light, digital volt/ohmmeter (DVOM) with 10-megohm input impedance (minimum), and jumper wires. A test light, rather than a voltmeter, must be used when indicated by diagnostic chart.

NOTE: In the diagnostic and trouble code charts, special scan testers are referred to (and recommended) by the manufacturer to read data parameters and check voltages in the system.