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Will start but won't shut off. Replaced ignition starter…

Customer Question
Will start but won't...

Will start but won't shut off. Replaced ignition starter switch still didn't fix it

Mechanic's Assistant: Have you checked the battery, particularly the terminal connections? Are they corroded?

Checked them they are good

Mechanic's Assistant: What is the model/year of your GM?

2007 gmc Sierra

Mechanic's Assistant: Are you fixing your Sierra yourself? What have you tried so far?

Me and mechanic are. Replaced ignition switch is all

Submitted: 7 months ago.Category: GMC
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Answered in 5 minutes by:
12/31/2017
GMC Mechanic: Todd Audette, A.S.E Certified Master Technician replied 7 months ago
Todd Audette
Todd Audette, A.S.E Certified Master Technician
Category: GMC
Satisfied Customers: 427
Experience: GMC Technician
Verified

Hi my name is*****'m a G.M Master Technician with 30 yrs of experience. I'm reviewing you question and would be happy to assist you. Please allow me a little time to review and i will be with you soon.

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Customer reply replied 7 months ago
Ok I've been fighting it for like 2 weeks now
GMC Mechanic: Todd Audette, A.S.E Certified Master Technician replied 7 months ago

Is your truck Gas or Deisel

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Customer reply replied 7 months ago
It's a v6 gmc Sierra 2007 gas burner
GMC Mechanic: Todd Audette, A.S.E Certified Master Technician replied 7 months ago

Ok just so i understand correctly.....you can start the truck but when you turn the ignition to the off position it stays running correct?

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Customer reply replied 7 months ago
sir
GMC Mechanic: Todd Audette, A.S.E Certified Master Technician replied 7 months ago

when you turn it to the off position does the key come out ok

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Customer reply replied 7 months ago
sir I can take the keys out and go in the house and it will continue to run for as long as you let it.
GMC Mechanic: Todd Audette, A.S.E Certified Master Technician replied 7 months ago

What is it that you do to turn it off

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Customer reply replied 7 months ago
Have to unplug the electric side of the coil wire
GMC Mechanic: Todd Audette, A.S.E Certified Master Technician replied 7 months ago

You stated that you have replaced the ignition switch. Was this doing this before? And is there any aftermarket accessories on the truck

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Customer reply replied 7 months ago
Yea it was doin this before I replaced ignition switch. That why I replaced it. And no there isn't any after market parts on it
GMC Mechanic: Todd Audette, A.S.E Certified Master Technician replied 7 months ago

I'm assuming that it has been scanned for codes.......sounds like you have a bad bcm or ecm not recognizing the loss of ignition voltage when the key is turned to the off position

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GMC Mechanic: Todd Audette, A.S.E Certified Master Technician replied 7 months ago

I would be looking more at the ECM

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Customer reply replied 7 months ago
That's what me and my mechanic were thinking it was just wanted 2nd opinion
GMC Mechanic: Todd Audette, A.S.E Certified Master Technician replied 7 months ago

Please note that customer satisfaction is my #1 goal and leaving a 3-5 star rating today will keep this chat open for further follow up questions you may have. Thank you for rating my assistance and for using Just Answer

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GMC Mechanic: Todd Audette, A.S.E Certified Master Technician replied 7 months ago

Just checking in to see if you have made any progress

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