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04 gmc k3500 gas....will not shutoff with key switch...dash…

Customer Question
04 gmc k3500...

04 gmc k3500 gas....will not shutoff with key switch...dash goes out...engine still running...have to pull ecm fuse underhood to shut down.....throttle body seems to to powered up with key off....not ignition switch

Mechanic's Assistant: What's the make/model/year of your truck? Engine type?

04 gmc k35004x4 6.0 gas engine

Mechanic's Assistant: Anything else you want the truck mechanic to know before I connect you?

That be the issue,,

Submitted: 7 months ago.Category: Medium and Heavy Trucks
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Customer reply replied 7 months ago
I disconnect neg battery terminal and hook it back up you can hear the throttle body actuate......I did check the ign switch..no issue there..........I did recently clean the ground wires on front frame and under drivers door.on frame.....I don't think this had anything to do with it.....ive never come across this situation before...I did check alternator also....
Answered in 1 day by:
12/5/2017
Technician: Daniel Wilson,
 replied 7 months ago
Daniel Wilson
Category: Medium and Heavy Trucks
Satisfied Customers: 6,833
Experience: Owner at DJ Wilson
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Hi my name is***** see you have been waiting for some help with this. Did you still need help?

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Customer reply replied 7 months ago
please
Customer reply replied 7 months ago
You don't hAve to call I'm not at shop
Customer reply replied 7 months ago
Still need hwlp
Technician: Daniel Wilson,
 replied 7 months ago

double check the IGN switch is cutting power to the ECM as it should and if not it could be the switch but if you are sure power is not feeding from the switch, check for shorts from another circuit back feeding power. Also check your relays and fuses. Let me know

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Customer reply replied 7 months ago
I unplugged switch....even unplugged ecm....still had power to the throttle body..I'll chk.ignition switch wires..I think there should power on one wire.
Technician: Daniel Wilson,
 replied 7 months ago

Let me know. I help in between jobs . We can follow up as needed... I might have some diagrams buried in my archives if we need to get that deep into this

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Technician: Daniel Wilson,
 replied 6 months ago

Hi, Did you get this resolved? Please take a moment to rate as that is how the site credits my time helping on the site or let me know if you need more help. 5 star and bonuses are always greatly appreciated. Wish you and yours a great holidays. It's been a pleasure working with you on this.

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Customer reply replied 6 months ago
I haven't found issue yet..been checking wiring...would bcm cause this..doesn't it control fuel and igb circuit
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