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11-17-2013, 10:33 PM
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#1
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Name: Mr.T
Title: DPF's are gay
Status: Not Here
Join Date: Dec 2009
Location: Rexburg, Idaho
Member`s Gallery
Posts: 8,030
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Gonna upgrade, what to look for
So my wife and I have decided its time for the LB7 to go to a new home, so we're looking to upgrade to an LLY, LBZ, or possibly an LMM. Not knowing a whole lot about those years, what should I look for as far as mechanical issues, common problems.....etc? I know about the pump rub issue in the transfer case, was that repaired on the new trucks? Are the LLY's having head gasket and injector issues like the LB7's do? And I hear about pistons cracking on the lbz's? What causes that and is there any telltale sign of having cracked a piston or two? Anything else I should he looking for?
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2019 L5P, missing some stuff that makes it quiet.
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11-18-2013, 06:43 AM
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#2
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Name: Operator1
Title: Over Budget
Status: Not Here
Join Date: Feb 2010
Location: NC
Member`s Gallery
Posts: 158
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06-early 07 lbz seems to be as good as they get. The cracked pistons don't seem to happen as often now since the available tuning has improved so much over the last few years. I can't think of any other common problems with those. Except sticker shock. Being the last model without a dpf is a benefit as well.
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-Chad
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11-18-2013, 08:33 AM
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#3
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Name: Mr.T
Title: DPF's are gay
Status: Not Here
Join Date: Dec 2009
Location: Rexburg, Idaho
Member`s Gallery
Posts: 8,030
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__________________
2019 L5P, missing some stuff that makes it quiet.
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11-18-2013, 09:49 AM
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#4
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Name: DirtyMaxx03
Title: Too Much Time
Status: Not Here
Join Date: May 2011
Location: San Antonio, TX
Member`s Gallery
Posts: 2,862
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You honestly can't go wrong with any year. The lb7's are the only model that have issues (injectors) all the other ones are solid. Get Into the newest truck you can
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11-18-2013, 09:54 AM
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#5
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Name: atvracn08
Title: Too Much Time
Status: Not Here
Join Date: Aug 2010
Location: .
Member`s Gallery
Posts: 294
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LMM's don't have the pump rub issues, my brother had an 08 all deleted with dsp 5 and it was a great truck.
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11-18-2013, 08:48 PM
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#6
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Name: WhitetailAddict
Title: Too Much Time
Status: Not Here
Join Date: May 2009
Location: On the water
Member`s Gallery
Posts: 1,145
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Personally, I don't buy the LBZ kool-aid. '08+ LMM's I wouldn't be near as hesitant about buying. Like was said, get the newest truck you can.
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'12 Duramax
'03 Duramax
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11-18-2013, 09:52 PM
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#7
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Name: Mr.T
Title: DPF's are gay
Status: Not Here
Join Date: Dec 2009
Location: Rexburg, Idaho
Member`s Gallery
Posts: 8,030
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Theres a bunch we're gonna go look at this weekend, a few 05's, an 06, a couple 07's, and an 08 that I definitely want to see
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2019 L5P, missing some stuff that makes it quiet.
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11-23-2013, 09:08 PM
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#8
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Name: Mr.T
Title: DPF's are gay
Status: Not Here
Join Date: Dec 2009
Location: Rexburg, Idaho
Member`s Gallery
Posts: 8,030
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Found one. got a 2004 LLY with 100,000 miles for 21k, traded in our LB7 and got to keep the wheels and tires. I'll post pics tomorrow
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2019 L5P, missing some stuff that makes it quiet.
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11-23-2013, 10:30 PM
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#9
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Name: WhitetailAddict
Title: Too Much Time
Status: Not Here
Join Date: May 2009
Location: On the water
Member`s Gallery
Posts: 1,145
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^^ The best Duramax made.
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'12 Duramax
'03 Duramax
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11-23-2013, 10:41 PM
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#10
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Name: Mr.T
Title: DPF's are gay
Status: Not Here
Join Date: Dec 2009
Location: Rexburg, Idaho
Member`s Gallery
Posts: 8,030
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I love it so far, I've been looking at upgrades tonight.......this truck will be very bad for my wallet. EGR delete, PCV reroute, exhaust, intake, wheels, tires, etc etc etc. Haha
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2019 L5P, missing some stuff that makes it quiet.
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11-24-2013, 06:01 PM
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#11
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Name: 1pieceatatime.
Title: Comp Diesel Sponsor
Status: Not Here
Join Date: Aug 2011
Location: Utica NY
Member`s Gallery
Posts: 832
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Quote:
Originally Posted by Mr.T
I love it so far, I've been looking at upgrades tonight.......this truck will be very bad for my wallet. EGR delete, PCV reroute, exhaust, intake, wheels, tires, etc etc etc. Haha
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Start saving for Head Gaskets and Studs now.
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Need Axle and Driveline parts? Maybe a custom driveshaft? Hit me up for quote. - U-joints
- Slip yokes
- End Yokes
- Axle Shafts
- Axle and Diff Parts
- Dana & AAM Ball joint kits
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11-24-2013, 08:05 PM
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#12
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Name: Mr.T
Title: DPF's are gay
Status: Not Here
Join Date: Dec 2009
Location: Rexburg, Idaho
Member`s Gallery
Posts: 8,030
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Quote:
Originally Posted by 1pieceatatime.
Start saving for Head Gaskets and Studs now.
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Shhhhhhhh!!!!!!! Lol
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2019 L5P, missing some stuff that makes it quiet.
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11-24-2013, 08:06 PM
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#13
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Name: WhitetailAddict
Title: Too Much Time
Status: Not Here
Join Date: May 2009
Location: On the water
Member`s Gallery
Posts: 1,145
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If he held the gaskets together on his '02 LB7, gaskets won't be a concern on an LLY.
__________________
'12 Duramax
'03 Duramax
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11-24-2013, 09:03 PM
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#14
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Name: Mr.T
Title: DPF's are gay
Status: Not Here
Join Date: Dec 2009
Location: Rexburg, Idaho
Member`s Gallery
Posts: 8,030
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Are the head gaskets really that bad in the LLY trucks?
__________________
2019 L5P, missing some stuff that makes it quiet.
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11-24-2013, 09:11 PM
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#15
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Name: LMMGilotine
Title: High on Diesel
Status: Not Here
Join Date: Sep 2013
Location: Kill Devil Hills, NC
Member`s Gallery
Posts: 106
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LMM all the way, its been the most reliable/cheapest to own truck ive had. I wasnt even looking at dmax's until i saw the slt interior of my truck. Love it.
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-08 GMC CCSB: Bullseye S475, Wehrli piping, Callie’s crank, wagler cam, SoCal rods, Mahle pistons, Burkett racing 2 stage heads, ARP’s, Exergy 150%, Exergy sportsman/ wehrli dual fuelers, Airdog 165, Suncoast Gmax trans w/ precision ML (2400 stall) billet convertor
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11-24-2013, 09:44 PM
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#16
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Name: WhitetailAddict
Title: Too Much Time
Status: Not Here
Join Date: May 2009
Location: On the water
Member`s Gallery
Posts: 1,145
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Quote:
Originally Posted by Mr.T
Are the head gaskets really that bad in the LLY trucks?
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No.
__________________
'12 Duramax
'03 Duramax
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11-24-2013, 09:51 PM
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#17
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Name: Mr.T
Title: DPF's are gay
Status: Not Here
Join Date: Dec 2009
Location: Rexburg, Idaho
Member`s Gallery
Posts: 8,030
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like 70% of people I've told that I bought an LLY have said the same thing, "if you think LB7 injectors were expensive, wait till your LLY needs injectors or head gaskets." I've heard of a few LLY's needing an injector or two and just as many that have had bad head gaskets, it really seems kinda hit or miss
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2019 L5P, missing some stuff that makes it quiet.
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11-24-2013, 10:44 PM
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#18
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Name: lparrill
Title: Might as well burn money
Status: Not Here
Join Date: Dec 2012
Location: Wyoming
Member`s Gallery
Posts: 26
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My other LLY has 200k on stock headgaskets
That being said I love both my LLY's, they just get a bad rep
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04 LLY Built motor/trans, twins, dual cp3 and stuff -- Gone
05 LLY Built trans, lift pump -- Basic and beat up
Last edited by lparrill; 11-24-2013 at 10:45 PM.
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11-24-2013, 10:49 PM
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#19
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Name: WhitetailAddict
Title: Too Much Time
Status: Not Here
Join Date: May 2009
Location: On the water
Member`s Gallery
Posts: 1,145
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LLY's got a bad rap for a few trucks overheating. That overheating was most likely operator error while towing. Said overheating was most likely a large cause of the same group griping about head gaskets. I've never seen an issue on LLY head gaskets that weren't related to aftermarket chargers on trucks without studs.
LLY's can puke injectors, but it's usually at 200K miles and you can replace one at a time and very easily, compared to an LB7. LBZ's have more injector issues than LLY's.
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'12 Duramax
'03 Duramax
Last edited by WhitetailAddict; 11-24-2013 at 10:51 PM.
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11-24-2013, 10:52 PM
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#20
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Name: Mr.T
Title: DPF's are gay
Status: Not Here
Join Date: Dec 2009
Location: Rexburg, Idaho
Member`s Gallery
Posts: 8,030
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Its not going to be a 500hp hotrod either, I'm gonna take care of the usual things like the egr, intake/exhaust upgrade, and have some mild tuning done and then its gonna get left alone, I had my LB7 for almost three years with just a tune and exhaust and it was always reliable for me, every time I hit the key it started up and never gave me any trouble. I have a feeling this pickup will be the same.
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2019 L5P, missing some stuff that makes it quiet.
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