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I disconnected the battery on my 2008 GMC Yukon. Now the…

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I disconnected the battery on...
I disconnected the battery on my 2008 GMC Yukon. Now the truck won't start. The electronics come on but I get nothing when I try to start the engine. Is there some sort of anti-theft system that is preventing me from starting?
Submitted: 11 months ago.Category: GMC
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Answered in 2 minutes by:
3/9/2017
GMC Mechanic: david craig, Owner/[email protected] 3D Atuomotive replied 11 months ago
david craig
david craig, Owner/[email protected] 3D Atuomotive
Category: GMC
Satisfied Customers: 4,726
Experience: owner/mechanic at 3D Automotive
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Hi Im David. when you try to start the vehicle does the theft light go out?

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Customer reply replied 11 months ago
the theft light comes on for a quick second (along with all the other dash lights) but then goes off.
GMC Mechanic: david craig, Owner/[email protected] 3D Atuomotive replied 11 months ago

ok, then its not anti theft

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Customer reply replied 11 months ago
any ideas what it might be?
GMC Mechanic: david craig, Owner/[email protected] 3D Atuomotive replied 11 months ago

what was the reason for disconnecting the battery?

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Customer reply replied 11 months ago
had an error code P0121 relating to throttle body. Cleaned the throttle body, then started the engine to see if the light would go off. Car ran well but check engine light remained on. I had read on several forums that the light may go off if I disconnected the battery for 10 minutes. After I reconnected the battery, the car wouldnt start...
GMC Mechanic: david craig, Owner/[email protected] 3D Atuomotive replied 11 months ago

ok, well the first thing we need to do is to check the obvious fuses. ill send you some to check. if they are all good we will move on to the next step.

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GMC Mechanic: david craig, Owner/[email protected] 3D Atuomotive replied 11 months ago

check these also

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GMC Mechanic: david craig, Owner/[email protected] 3D Atuomotive replied 11 months ago

just checking in to see how its going

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