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2000 GMC C6500 Topkick C6H042 7.4L No Start
Posted to GM Driveability on 9/16/2025

towed in no power to pcm . removed rats' nest and repaired harness. this is where it gets interesting, confirmed power to computer and crank sensor still no start . . Old school checked function of crank sensor by moving screw driver back and forth on end ...

  Related Documents & Media  2000 GMC C6500 Topkick C6H042

 
Message Closed w/FIX

car Vehicle Data

2000 GMC C6500 Topkick C6H042

VIN 1GDG6H1D3Y
Engine7.4 L / 8 cyl / GAS
DeliveryFuel Injection / sefi
EmissionsOBD-II Compliant
SymptomsNo Start
OccursAlways
Message Closed w/FIX

car Vehicle Data

2000 GMC C6500 Topkick C6H042

VIN 1GDG6H1D3Y
Engine7.4 L / 8 cyl / GAS
DeliveryFuel Injection / sefi
EmissionsOBD-II Compliant
SymptomsNo Start
OccursAlways