P0380 Code - Chevy and GMC Duramax Diesel Forum

01-04.5 LB7 Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.

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post #1 of 14 (permalink) Old 08-23-2008, 11:35 PM Thread Starter
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P0380 Code

Any help hith this code and how to fix it?

2002 Chevy LB7 Crew Cab
Bone Stock for right now!! Looking to add some real power>
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post #2 of 14 (permalink) Old 08-23-2008, 11:47 PM
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That is for the glow plug circuit. Sounds like you may have a bad glow plug controller.

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post #3 of 14 (permalink) Old 08-24-2008, 12:02 AM Thread Starter
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OK thanks for the fast reply will check it out.

2002 Chevy LB7 Crew Cab
Bone Stock for right now!! Looking to add some real power>
16 inch Helo Rims and 285 Nitto Terra Grapplers

Thank you Duramax Forums
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post #4 of 14 (permalink) Old 08-24-2008, 06:21 AM
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I need to know if your truck has California/clean fleet emissions on it. The glow plug systems work different. If you have California/clean fleet emissions then your truck will have an EGR valve, a belt driven vacuum pump, and several vacuum control solenoids on top of the fuel filter.

If you have California emissions then 1 or more glow plugs are bad. If you have standard emissions then the glow plug controller/relay is bad.

You do not have to be from California to have one of these trucks with clean fleet emissions, I see them here in Georgia a lot.
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post #5 of 14 (permalink) Old 08-24-2008, 06:38 PM Thread Starter
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Yes i definatly have a California Emission truck. Thank you for the info.

2002 Chevy LB7 Crew Cab
Bone Stock for right now!! Looking to add some real power>
16 inch Helo Rims and 285 Nitto Terra Grapplers

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post #6 of 14 (permalink) Old 08-25-2008, 12:42 PM
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The glow plug controller rarely goes bad on a Cali emission truck. You probably have a bag glow plug. Take a test light and connect it to the positive side of the battery and touch each glow plug at the tip. The test light will light up on the good ones and will not light up or light dim on the bad ones.

It should also be noted the the 02-04 LB7 with California emissions have an extened warranty on the glow plugs for 10 years or 200,000 miles. If you truck is sill under this then the dealer will fix it for free.
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post #7 of 14 (permalink) Old 11-21-2008, 12:45 PM
 
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my vacuum pumpin my 02 GMC Duramax is going bad, as it is making noises. Do you know what the gmc part number is?
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post #8 of 14 (permalink) Old 02-14-2011, 10:24 AM
 
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excuse my ignorance but what is Lb7?
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post #9 of 14 (permalink) Old 02-14-2011, 10:43 AM
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Quote:
Originally Posted by tweltmer View Post
excuse my ignorance but what is Lb7?
read up man,
Duramax V8 engine - Wikipedia, the free encyclopedia

try searching or googling something before posting

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post #10 of 14 (permalink) Old 02-14-2011, 12:03 PM
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hello everyone i have a few code's on my 2007.5 lmm duramax. p102 p113 p0650 ive looked them up but didnt really get any clarification on them. any help would be app. i also called the dealer to see if this would be covered since it has happen before and kindda getting the run around. i have 42k mile.. thanks
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