Truck starts, runs for 2 seconds and dies. Only starts if key goes from off to start in one motion, if you pause on accessory then it wont even...

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Customer

Truck starts, runs for 2 seconds and dies. Only starts if key goes from off to start in one motion, if you pause on accessory then it wont even crank. At the same time the door chime and stereo stopped working as did my gauges. Warning lights work, but no gauges

Last updated
Elixir Cada
Auto Mechanic

Hello and welcome to ExpertHelp.com! My name is Elixir Cada and I'm going to do everything in my power to answer your question to your full satisfaction!

Before we get started, I want to remind you ExpertHelp.com is an independent professional support company. We do not have any affiliation to any vehicle  company nor are we paid to provide support on their behalf. However, we have helped hundreds of customers with similar questions and believe we can help you too. OK, let’s get started!

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Posted
Elixir Cada
Auto Mechanic

Hi Tom,

Sorry to keep you waiting. 

May i know the exact make and model of your vehicle and when did the problem started?

You can send me a reply by entering your message in the box at the top then hit the send response button to send.

 

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Customer

2008 Chevy Silverado 1500, 4.8L

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Customer

I replaced the ignition switch today. Now it wont even start but the door chime and gauges work

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Elixir Cada
Auto Mechanic

Hi Tom,

Double the the wiring/harness you might have missed something there. Is the engine cranking when you try to start the truck? 

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Customer

No it does nothing. Only 2 plugs to disconnect changing the switch, both plugged back in. Security light is not on so dont think its a passlock issue?

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Elixir Cada
Auto Mechanic

Do you have alarm system or immobiliser installed on yiur vehicle. You might need to reset it since you changed the ignition switch.

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Elixir Cada
Auto Mechanic

You might want to test also the battery if you are getting 13v up for cranking power. check also the battery terminals if they are loose.

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Customer

Battery is new, but tested anyway. Its good. There is an alarm but it had s never worked since I bought the truck used. Guess maybe I need to just remove it then

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Elixir Cada
Auto Mechanic

Yeah i suggest just to remove the alarm. Seems like the alarm system got engaged when you installed the new ignition switch.

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Elixir Cada
Auto Mechanic

Let me know if you have further questions. 

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Customer

No luck after removing the alarm from the ignition switch. 

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Elixir Cada
Auto Mechanic

Can you try to jump start the starter of the vehicle using wire or screwdriver. Connect the hot 12v wire of the starter to the starter's trigger wire and see if you can start the engine that way. See video below.

https://www.youtube.com/watch?v=Mv0zjxp6654

 

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