LB7 DIY, Maintenence, Codes, and TSB's. - Diesel Bombers

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LB7 DIY, Maintenence, Codes, and TSB's.

Chevy/GMC Duramax 01-04 LB7 Discussion of Chevy and GMC Trucks with LB7 Duramax Turbo Diesel Engines

LB7 DIY, Maintenence, Codes, and TSB's.

  #1  
Old 12-15-2009, 12:37 AM
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Default LB7 DIY, Maintenence, Codes, and TSB's.

Here is a list of a few DIY's, maintenance, codes, and TSB's that are posted on this site. The links are here to help the members find and answer frequently asked questions that are often posted in this section of the site. If they are anymore important ones that you think should be added please send a PM or shout out.

Computers and Control Systems Locations: https://www.dieselbombers.com/chevy-...locations.html

Fuel System Diagnosis - High Pressure Side: https://www.dieselbombers.com/chevy-...ssure-side.htm

LB7 Water Pump replacement: https://www.dieselbombers.com/chevy-...ement-diy.html

Cabin Air Filter: https://www.dieselbombers.com/chevy-...ir-filter.html
 

Last edited by 2500HeavyDuty; 04-13-2010 at 12:41 AM.
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  #2  
Old 12-16-2009, 01:29 PM
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/me opens
 
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  #3  
Old 01-03-2011, 01:00 PM
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have 01 with code p0089 fule preasure regulater performance .? also p0234 overboost ? help
 
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  #4  
Old 11-25-2011, 02:30 PM
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I have a code p0087 fuel rail pressure, and p0234 overboost.
It wont start without start fluid, starting to believe its the injection pump.
 
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  #5  
Old 10-11-2013, 08:45 AM
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anybody know the back lash setting an sequence to adjust them by on 2003 chevy dmax
 
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  #6  
Old 04-01-2015, 07:30 PM
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I have a 2002 gmc duramax, it'll try and fire up, but just won't. Replaced everything on the motor. I heard it could be the TCM, but don't want to spend the money and it not be that. The Injectors are aftermarket and are just fine. Had them checked, everything on the engine has been checked. Need help please
 
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  #7  
Old 01-19-2016, 06:10 PM
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Default LB7 2004 Has hardly no heat

When driving down the road, plenty of time for truck to warm, it is putting out luke warm heat, control set on 90...no leaks, fluid is full,had radiator replaced about 4 months ago, havent tried flushing heater core yet but will try if you guys think it will help, also thought maybe the thermostats, just seeing what you guys think maybe a cause, new to the site and thanks in advance for any help, temp here in Georgia high 20's to mid 30's if that helps any on the heating end of it.
 
  #8  
Old 02-10-2016, 06:44 PM
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my heat wasnt working right and I got tired of it. It was 20 degrees where I live in TN and decided it was the Tstats. Drained some coolant, took old out and replaced and works great now. Takes me long enough to get from home to work (which is about 5 minutes) for it to heat up.
 
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Old 02-10-2016, 10:40 PM
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Originally Posted by qgcrim01 View Post
my heat wasnt working right and I got tired of it. It was 20 degrees where I live in TN and decided it was the Tstats. Drained some coolant, took old out and replaced and works great now. Takes me long enough to get from home to work (which is about 5 minutes) for it to heat up.
So both therms and it works perfect, is that what ur saying? Mine fluctuates with engine revs, on the hey and give it throttle and it warms up, stopped or at a light, goes back to Luke warm or hardly anything. I guess it wouldn't hurt to just change them anyways, did you use aftermarket or genuine, I'm not to good for aftermarket so I might just give it a run, what temps did u get?
 
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Old 02-10-2016, 10:45 PM
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Originally Posted by LB72004 View Post
So both therms and it works perfect, is that what ur saying? Mine fluctuates with engine revs, on the hey and give it throttle and it warms up, stopped or at a light, goes back to Luke warm or hardly anything. I guess it wouldn't hurt to just change them anyways, did you use aftermarket or genuine, I'm not to good for aftermarket so I might just give it a run, what temps did u get?
My heater will run you out of the truck now. The rubber gaskets on the inside of both of mine that hold the coolant out were non existent anymore. I used some factory recommended ones from Oreilly's. If I'm thinking correct they were between $40 and $50 a piece.
 

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