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Hello Gentlemen,
New guy here. I'm looking for some help. I have a 2007 (Classic Body) 2500 HD Turbo Diesel Crew Cab. My check engine light is on and the glow plug light that usually goes off after turning the key on, indicating it's okay to start, stays on until "after" I start the vehicle. The vehicle starts fine. I purchased a Code Reader from my local auto parts store and it's throwing a code "P0627". I don't know what this code is or if it is related to the glow plug issue. My truck has about 77,000 miles on it. I am the original owner and I have never done anything with the glow plugs or the glow plug relay?. Can anyone help me out??
Fireman Dan
 

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It's the fuel pump control circuit.....sounds like a relay or something. Hope this helps..
 
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