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Home >> GMC >> 1991 >> Value Van 7.4 N >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Diagnosis - A/T >> Diagnostic Flow Charts (Cars) >> Chart C-8, Torque Converter Clutch Electrical Diagnosis - 3.1L PFI A & J Bodies (2 Of 2) >> 1st Gear

1st Gear

2nd gear switch opens

2nd gear signal switch closed

3rd gear signal switch closed