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

/me opens

have 01 with code p0089 fule preasure regulater performance .? also p0234 overboost ? help

I have a code p0087 fuel rail pressure, and p0234 overboost.
It wont start without start fluid, starting to believe its the injection pump.:scare2::scare2::scare2:

anybody know the back lash setting an sequence to adjust them by on 2003 chevy dmax

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

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.

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.

Thanks
 

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.

Temperature wise I haven't seen more than 190 degrees. It takes 170 for my edge juice with attitude to come alive and I haven't seen much more over that. Last summer I could barely get it to 180 and I can hit that in no time now.

Thermostats
 

What are the chances you rem the part numbers, is yours an lb7, what year? Thanks for the info!!!

Don't remember the part number right off hand. You'd just have to call a parts store and find out. Mine is a 01 lb7. Took about 30 minutes to do the job. Just make sure you put coolant back in.

Coolant
 

Did you loose a lot or you drained it lower than therms so it didn't get everywhere....sorry to keep dragging this out!!!

No problem. Glad to help out. I just drained it out low enough so it was underneath the t stats so it wouldn't make to much of a mess. Loosen the bleeder screw on the top of the housing before you do anything to let the air out.

Last question...where did u drain it from..bottom of radiator? And just collected to re use?

Drained it from radiator drain plug. Put some new in when I got finished cause the only drain pan I had was for oil. And honestly I find most of my stuff out on YouTube. I'm sure there is a bunch of guys here that would crucify me for saying that but YouTube has been a life saver for me with my vehicles.

It's hot now!!!
 

I love YouTube for that reason....swapped stats out and I could smoke a pig in there now....damn it's hot...15-20 min and it was done. Thanks for the help, I'm pretty mechanically inclined but diesels as much as I love mine scare the hell out of me!! Thanks again!!!

No problem man. Maybe one of these days you can return the favor. Glad your heat is working good Now:tu: