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Home >> GMC >> 1992 >> Forward Control 5.7 K, Standard >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Diagnosis - A/T >> Diagnostic Flow Charts (Cars) >> Code 24, Vehicle Speed Sensor (VSS) 5.0L & 5.7L TBI B, D & F Bodies >> Diagnostic Aids

Diagnostic Aids

A faulty or misadjusted park/neutral switch may set a false Code 24. Use "Scan" tester and check for proper signal in Drive, while wiggling shifter.

Fig 1: Code 24 Troubleshooting Diagram (5.0L & 5.7L TBI B, D & F Bodies)
G92I13704Courtesy of GENERAL MOTORS CORP.
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