2000 C3500 truck dies when put in park

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Tech

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Joined
Dec 30, 2015
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Location
Washington
Does it start back up and run in park after it dies or does it fail to restart?
Can you make it run with a little throttle?
Does it run in neutral or act just like park?
It looks like it is idling at just under 500 RPM. Is that the norm? my BB idles at 700-750 warm.
500 seems low. The ECU probably reduces the idle when it goes into park, around 400 is cranking speed /not running. It may be shutting the fuel off on you because it thinks that it died.
 
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