Truck stopped on me on the E-way started sputtering and shut down now no spark

Asked by BigCee23 Dec 29, 2020 at 08:35 AM about the 1999 GMC Yukon Denali 4WD

Question type: Maintenance & Repair

I changed the coil, module, crank and cam sensor, changed the plugs and  
wires, distributor cap and rotor, but still no spark, could anyone tell me what
I’m missing I need to get back in motion Please anyone HELP!!!!

1 Answer

27,530

Make sure battery has a full charge and all battery connections good. Have you checked voltage and ground, anywhere? Note the diagram, the pink wire to ignition module and coil, is voltage, fuse protected, goes hot hot with key on, use a test light, see if those wires are hot. Under the ignition module, wiring diagram, black wire with white tracer is ground. You could take connector loose, use both ends of test light, between pink wire and black with white tracer, key on, if test light comes on, you have voltage and ground, good enough for test light. Does the dist rotor turn, when you crank it? Any applicable trouble codes?

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