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The service engine soon light is blinking and the truck is…

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The service engine soon light...
The service engine soon light is blinking and the truck is idling rough
Submitted: 2 years ago.Category: GMC
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Answered in 2 minutes by:
1/20/2016
GMC Mechanic: Gary, ASE Certified Technician replied 2 years ago
Gary
Gary, ASE Certified Technician
Category: GMC
Satisfied Customers: 18,026
Experience: GCM master tech over 25 years
Verified

I am sorry you are having this problem

if you unplug one injector connector at a time at idle which cylinders injector do you unplug that the idle will NOT change at all ?

we need to know which cylinder or cylinders are dead

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