Home >> Chevy Truck >> 1988 >> C 2500 Truck 2WD V8-454 7.4L >> Repair and Diagnosis >> Transmission and Drivetrain >> Manual Transmission/Transaxle >> Technical Service Bulletins >> All Technical Service Bulletins >> M/T - HM-290 Diagnostic Information >> 1988 Hm-290 Diagnostic Chart >> Hop-Out