Question about GMC G2500
I've had the same thing happen. My problem was a cracked rotor. Couldn't see the crack just black scaring where the juice was traveling. Try a new cap and rotor.
Posted on Dec 29, 2010
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Posted on Jan 02, 2017
Tips for a great answer:
Ignition coil driver module
Crankshaft position (CKP) sensor
Now which part do you want to replace ?
Cap and rotor
Camshaft position sensor
Gear drive and shaft
The camshaft drives the distributor shaft which rotates providing a spark to the correct cylinder by way of the cap and rotor. The camshaft position (CMP) sensor functions much like the crankshaft sensor previously described but provides only a 1x signal to the VCM. That is, for every 2 rotations of the crankshaft, there is 1 rotation of the camshaft. Note that the camshaft position sensor will not affect driveability. The sole purpose of the camshaft position sensor is to provide the VCM with the necessary information for the misfire diagnostic trouble codes (DTCs).
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