General Motors' GMT400 platform.

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Engine starts then dies everytime

When I start my truck it starts and immediately stops. What would cause this?

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The fuel pressure is good, changed plugs,wires,distributor cap. Ran well the day before and next morning battery was dead. Charged up bat. and then motor would start and then die each time, over and over, not doing anything else.


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I had the same problem , I changed the fuel pump and it has not turned off since

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Passlock/passkey sensor needs to be replaced. This is the cylinder housing your key switch goes into.

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Check antitheft passlock module-located behind ashtray compartment. My circuit board was burnt in 3 places

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patomccoy will be eternally grateful.
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