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1997 GMC Yukon Engine won't start

Tiny
JPRACING9536
  • MEMBER
  • 1997 GMC YUKON
  • V8
  • 4WD
  • AUTOMATIC
  • 138,204 MILES
The Crank Sensor wires burn when then hit the exhaust manifold and the engine shut off. After me repair the burned wires and try to turn on the engine this never occur. Me check the flow of electricity from the igniton and this not throw any spark, Me verify the continuity of all wires to the ECM and all is Ok. Me replace the Crank Sensor and the Ignition Coil and nothing happen.
Is the Computer damaged?
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Saturday, March 8th, 2008 AT 8:06 AM

1 Reply

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
First you need to scan dor any codes, if P0336 is in memory, and you have tested the signal to the sensor, and it's OK and you have changed the sensor, the VCM needs testing or replacing...Vehicle control mod is location C1 in the diagram...


https://www.2carpros.com/forum/automotive_pictures/62217_VCM_1.jpg

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Saturday, March 8th, 2008 AT 8:27 AM

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