I have just about completed the deal for a 2004 crew cab duramax. I am just wondering which engine I want it to have? I did not check the vin to see which one it is. I am kind of getting the impression that the gen. 1 might give me injector problems and that the gen. 2 might overheat. I will use the truck to pull my stock trailer with cattle. Usual trailer weight is around 20000 lbs. My question to you guys is which engine do I want to find when I go check the vin?
Lby Vs. Lly
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Personally, I wish I would have bought the LB7. The injector issue is covered under warranty. The OH issue is just a PITA.
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If it is the lly it will overheat pulling 10k up long steep(6% +) grades in the heat. Mine overheats pulling 7k but the norm seams to be 10k and up.commish9;1552870; said:
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Lots of people tow heavy and don't overheat.
You needs lots of bad stuff together at the same time Heat, Wind resistance, weight, grade, driving style, and some variable in the engines no one seems to be able to pin down etc.
If the truck is otherwise good, the worst can happen you add an extra rad to it for around $1000 or so search for V2 mod.
These LLY's are good engines in a really good truck, and most people really have no problems whatsoever.
You needs lots of bad stuff together at the same time Heat, Wind resistance, weight, grade, driving style, and some variable in the engines no one seems to be able to pin down etc.
If the truck is otherwise good, the worst can happen you add an extra rad to it for around $1000 or so search for V2 mod.
These LLY's are good engines in a really good truck, and most people really have no problems whatsoever.
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Rob from BC Canada;1552967; said:
I have it pinned down. Pull a load of 10k or better in the heat up a long(not talking the ant hills on the east coast) grade of 6% or better in the summertime and I will promise you an overheat condition.
Read all of the overheating threads and if that doesn't scare you I don't know what will. With that being said, if you don't mind spending an extra grand, the V2 is a work of art and will prevent an overheat condition. If I lose my battle with GM the V2 will be installed on my truck.
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cuffnup;1553488; said:
You need to tow heavy. Yout won't overheat empty ever
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I had an 03 LB7. Never overheated nor caused any other problems. My farmer neighbor has an LLY - pulls heavy machinery and cattle trailers without issues. Bill Martin
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It is all about the conditions.
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Senotext;1554923; said:
Mine is a june build as well. I'm not so lucky in the towing dept.
Why would yours? It's not a 2004.5 LLY. And what does everyone mean by overheating? I pull a 10 K trailer and the fan comes on at 230 and cools right down. It's never gotten over 230 when pulling the So. Oregon mountains and the Siskious of N. Cal. Or does overheating mean it shuts off and strands one along side the road? Seems some want to pull the mountains without the fan coming on at all. I notice you live in the Midwest and wondering what kind of mountains have you back there?cuffnup;1553488; said:
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10,333 Posts
Enough already.
Overheating is a very touchy subject around here. This thread has turned into another one about just that. Not one of you even considered to post the link to the current OH thread that is still going.
Here's one:
http://dieselplace.com/forum/showthread.php?t=92941
And here's another...:
http://dieselplace.com/forum/showthread.php?t=127865
Overheating is a very touchy subject around here. This thread has turned into another one about just that. Not one of you even considered to post the link to the current OH thread that is still going.
Here's one:
http://dieselplace.com/forum/showthread.php?t=92941
And here's another...:
http://dieselplace.com/forum/showthread.php?t=127865
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