LLY's known issues

[blksmok]

1. Overheat
2. Number 2 / 7 harness rub

Who's dealt with these?

Anyone have different issues with their LLY?

My LLY had <50K miles when I traded it and I saw the overheat condition but never the harness rub.

Has anyone fixed one of the above items on their own?

[Bwoody]

I think pump rub is a concern on all of the dmax that apply.

[McRat]

The injectors are way too small. You cannot go over 400hp with one.

And the RPM sensor on the turbo is often wrong.

[Fingers]

Really? Tell me more.

[05lly2500hd]

The injectors are way too small. You cannot go over 400hp with one.

And the RPM sensor on the turbo is often wrong.
WHAT??

[05lly2500hd]

1. Overheat
2. Number 2 / 7 harness rub

Who's dealt with these?

Anyone have different issues with their LLY?

My LLY had <50K miles when I traded it and I saw the overheat condition but never the harness rub.

Has anyone fixed one of the above items on their own?
i FIXED My own harness problem, on #2 when it happened I just shoved some foil in it...:D then I got 2 new connectors off an old harness, good connectors and replaced 32 and #7 on mine by splicing.

[TNRGreene]

54000 & beat on pretty good. I have had none of the above issues other then I keep getting wheel sensor codes. That's it

[RickDLance]

Add cracked pistons to the list and you've covered most of my LLY issues.

[Schwinn68]

Add cracked pistons to the list and you've covered most of my LLY issues.

Hopefully I'll never have to find that out first hand. I have had trouble with the iss clunk, trans lines leaking, speedometer going bad. I think thats it.

[RickDLance]

Clusters for me too. I forgot about that.

Seems to only happen to the 04.5-05's too.

[Schwinn68]

the great thing is, the dealer won't cover it under warranty. It only applies to the earlier trucks so far. I'll probably just order the stepper motor and do it myself. When I mentioned this to the dealer he just looked at me like I had a third eye. then went on to tell me that wasn't the problem and the only way to fix it was a new cluster. I told him I'll take my chances fixing it myself

[RickDLance]

There IS a tsb out on the cluster and an extended warranty IIRC.;)

[Schwinn68]

I asked and was told it did not cover 05's :( even if it was I think it would be less hassle to just fix it myself than try to go to the dealer, make an appointment, lose my truck for a week and them wait around for them to send the cluster out and replace it.

[RickDLance]

I'll try to check for sure, but I do agree with the week.:(

[Schwinn68]

thanks Rick :)

[duratothemax]

mine had the "cracked piston" issue

well, 5 actually.

other than that not one problem in 85,000 miles

[TNRGreene]

mine had the "cracked piston" issue

well, 5 actually.

other than that not one problem in 85,000 miles

Show Off ):h

[duratothemax]

there an echo in here? ):h :p:

[RickDLance]

I asked and was told it did not cover 05's :( even if it was I think it would be less hassle to just fix it myself than try to go to the dealer, make an appointment, lose my truck for a week and them wait around for them to send the cluster out and replace it.

See if you can read this. My eyes are going.;)

http://www.dieselplace.com/forum/showpost.php?p=2043062&postcount=15

and

http://www.dieselplace.com/forum/showpost.php?p=2060195&postcount=28

[Schwinn68]

The first memo is about 04 trucks. My speedo no longer works at all. I've just learned to drive by the tach. eventually I'll fix it, I just haven't had the time

[8shot]

Overheat (no more), both front wheel bearings, water pump, speedo, pitman arm. All with less than 50k on it. All worth it cuz i still love this truck.

[Randy_the_Hack]

ISS clunk - that's pretty much it. My stock wheels are peeling their clearcoat. FWIW, the dealership near me told me they'd replaced speedo clusters on trucks with as many as 135k miles.

I'm currently at 101k... and hoping I can get a half million at least... ):h

[Diesel_Day_Dreamin]

Add oil leakage from the lower CAC to the list. LLY was the first to route the PCV vapors to the pre-turbo side of the turbo. LB7s just vented to the atmosphere.

49k and my list...

1) Runs Hot (V2 w/ fans on the ''to do'' list)
2) CAC (turbo pipe) blows off and oil leaking from charge cooler. Warranty repaired, then PCV reroute.
3) ISS clunk. Warranty replaced @ 18k, no problems since
4) Peeling clearcoat on wheels. Warranty replaced @ 34k (2 yrs old)
5) Worn Idler and Pitman Arms. Self repaired and Cognito kit installed @ 47k
6) Stock Shocks suck. Bilsteins installed

That's it so far. My truck was one of the last '05s built. When I ordered it they confirmed it would be built before the shut down of the '06 retooling. I have not experienced the speedo stepper motor or injection harness issues (maybe they knew of these late in the '05 build???). My harness is supported well with wire looming and extra tape compared to others I have seen. I've done the synthetic oil change to my T-case @ 19k, so hopefully I'll avoid the hole in the case issues. It's a toss-up. I ordered in haste to avoid new MD state emissions programs for testing diesels (turns out they waited until '07 model year). My friend got the '06 LBZ. My LLY runs hot, but gets better fuel mileage than his LBZ. :pp Overall, I'm happy with it. :thumb:

[kmax05]

On the instrument clusters has any one had trouble with just the oil pressure? When mine is cold sticks on 0 give it a few min then it pegs the gauge!!

[1lowdiesel]

only things i've had were the injector harness and cluster issue. although i did just have a problem w/ the filter housing but i took it apart and cleaned it and it's fine now. oh and i did have an ignition switch go bad, that i had to pay out of pocket.

next thing is going to be the trans though...i have a buddy that runs a service dept):h

[northface]

mine had the "cracked piston" issue

well, 5 actually.

other than that not one problem in 85,000 miles

how do you know you have this issue. cause my truck out side of (bad fuel) the motor has been good.

[duratothemax]

how do you know you have this issue. cause my truck out side of (bad fuel) the motor has been good.

you're asking how did I know I have a cracked piston???????

um, because I took the motor apart...... :rolleyes:

[northface]

you're asking how did I know I have a cracked piston???????

um, because I took the motor apart...... :rolleyes:


ok.... just wondered :thumb:

[RickDLance]

A cracked piston, where ours normally crack, will cause your truck to run rough, smoke, and build a lot of pressure in the crankcase that can blow oil seals.

[MAXLLY]

Cool thread.

66k miles. driver side wheel bearing, prolly my fault for lack of maintanence.

FICM harness resolved. Oil pressure guage has a "tick" to it, prolly the oil pump relief.

Never overheated, prolly never will now, all it does is cool water. No more oil, trans, secondary AC/boost etc.

[dirtbag]

Maxlly: Maintanence has nothing to do with the wheel bearings as GM elected to go with non-serviceable front hubs. Dealer charges $1,100 plus to replace both & you can replace for between $300 - $400.

[Crazy_Steve]

I've had gauges go bad, and a FPRV that is practically fused into the rail.

[gregs04.5]

Can add the tow/haul switch wire cracking to the list. Need to fix that on mine now.

[blksmok]

Can add the tow/haul switch wire cracking to the list. Need to fix that on mine now.

Welcome to the site!
:welcome:


I hadn't heard that one before. Where does it crack?

[gregs04.5]

On another sight, it was sounding like a common problem. Apparently it flexes near the stearing column, and breaks. I'll know exactly where this weekend maybe.

[Nemo]

Water pump went out... other than me doing things I shouldnt the truck is good 2 go. lol

-Nemo

[kayla j]

well my LLY overheated so bad i cracked a head! YIKES! haha but it was for a good reason...:(

[Dirtbikindad393]

2005 LLY 106k miles on it at present time.

Under warranty the rear end housing was replaced due to a crack in it. The Water pump and some injectors were replaced just before warranty ran out kind of a preventitive measure by a friend while warranty was still in place.

I replaced the TCM, Turbo, tires, oils, air cleaners, wiper blades and I am still waiting to replace the brake pads but they don't need it yet.....not even close yet. :thumb:

[Dmax Espresso]

I have a 2005 LLY and I was reading about harness problems. Where and what should I be looking for?

[RickDLance]

I have a 2005 LLY and I was reading about harness problems. Where and what should I be looking for?

Welcome!!

Here's a link to one of the harness fix threads.
http://www.dmaxcentral.com/forum/showthread.php?t=139

[Speedpro1]

Injector failures and cracked piston! :mad:

[stratman]

Hey!

I feel pretty good (knock on wood) My only problem was brakes and rotors all the way around a rear axle seal not GM'S fault (brake guy did not use original GM seal) and front wheel speed sensors. I guess to each his own. But that all does not matter cause I love the truck. Its a beast and not a beast like my ex if you know what I mean;

[stratman]

Hey!

Sorry I forgot, I checked the harness rub On my truck and they used the wire harness protection around that corner.

[majorpecs]

How do you know if the harnesses are bad? What are the symptoms?

[fishman]

I can't believe nobody has experienced leaky power steering lines. I just bought an 05 with 93K miles on it and both lines from the master cylinder are covered in gritty fluid. GM even has and outstanding recall on the lines for 05. Unfortunately my truck's VIN isn't on the list.

[neversatisfied]

I can't believe nobody has experienced leaky power steering lines. I just bought an 05 with 93K miles on it and both lines from the master cylinder are covered in gritty fluid. GM even has and outstanding recall on the lines for 05. Unfortunately my truck's VIN isn't on the list.

:welcome:

Are they just seeping around the fittings?

[blksmok]

I can't believe nobody has experienced leaky power steering lines. I just bought an 05 with 93K miles on it and both lines from the master cylinder are covered in gritty fluid. GM even has and outstanding recall on the lines for 05. Unfortunately my truck's VIN isn't on the list.

:welcome:

My 05 never had a problem with power steering lines. Maybe I just didn't keep it long enough... (40K miles when I traded it.)

[fishman]

Yes the steering lines appear to be leaking around the fittings. I'm not noticing any fresh leakage. I cleaned a bunch of build up off the turbo outlet tube (whatever you call it, I'm not a diesel mech) that runs under the PS pump. Maybe its an old problem that has "fixed" itself.

Somebody on another forum suggested I replace the crappy GM lines with hydraulic hose.

[rocketman]

I agree with the leaking P/S lines, and also I've had a leaking axle seal. I caught the harness rub before it caused a problem, but it was going to happen. Mine has never got hot. ( knock on wood )

[Big Chris]

No major problems on my 05 in 110,000. Occasional ISS clunk but havn't bothered to fix it. Passanger door speaker is blown, couple lights out on steering wheel and stereo HVAC controls. Never had overheating issues but I don't tow heavy in the mountains either. Still have original brakes.

[boMMerG]

[b][i]5 years and no issues other then a cracked windshield and pos turbo inlet :(

[boMMerG]

Oh.............. And leaky power steering lines

[blksmok]

[b][i]5 years and no issues other then a cracked windshield and pos turbo inlet :(

Oh.............. And leaky power steering lines

:welcome:

[1953drtelco]

No problems with any of the items listed so far, but my truck only has 69K miles....It does seem to have an accelerator problem whenever a Ford PS tries to pass. For some reason I have rapid acceleration....):h

[boMMerG]

No problems with any of the items listed so far, but my truck only has 69K miles....It does seem to have an accelerator problem whenever a Ford PS tries to pass. For some reason I have rapid acceleration....):h

Mine also!

[05REDLLY]

No problems with any of the items listed so far, but my truck only has 69K miles....It does seem to have an accelerator problem whenever a Ford PS tries to pass. For some reason I have rapid acceleration....):h

I have the same problem. Does yours do it when a cummins or import tries as well? Mine doesn't bother me so I will just let it be.):h

[EZ SPEED]

Never overheated (hope it never does)
Speedometer stepper motor started @ 122k
A few missing lights in cluster and radio
Transfer case pump rub @130k
Bumping steering shaft
Water pump @125k
Leaking power steering hoses
Front wheel hubs @ 130k
Pitman and idler arms @130k
Head gaskets @ 147k

And i just noticed that someone already did the injector harness for me :)

[Al. Pickering]

Never overheated (hope it never does)
Speedometer stepper motor started @ 122k
A few missing lights in cluster and radio
Transfer case pump rub @130k
Bumping steering shaft
Water pump @125k
Leaking power steering hoses
Front wheel hubs @ 130k
Pitman and idler arms @130k
Head gaskets @ 147k

And i just noticed that someone already did the injector harness for me :)Thats a lot of bad things to go rong, mine has 160000 Kil.And
still every thing is good:)

[jdjensenmia]

75000 miles brakes look great, ISS Clunk, Passenger front speaker blown, Fuel Filter Head Leak around fuel heater connection (repaired with 4 O-rings, $10 O-ring kit, Gm filter head $300 from Stealer)

I haven't seen anyone list this problem I'll be driving down the road all of the sudden my A/C goes to FULL HEAT (the heater door motor opens without warning) A/C compressor still running. Have to cycle the key off and on then it resets sometimes it happens every 5-10 minutes sometimes it doesn't happen for days. Let me just tell you in the heat of summer in Miami Fl this happens it sucks to be turning the truck on and off at street light and 4 ways just to get the A/C back or worse just pulling to the side of the road randomly. Haven't attemped to fix it, suppose to be buried under the dash? Anyone heard of this one? :(

[JeffCon]

Hello everyone! I just bought a 2005 and am trying to catch up. I appreciate all the information and fixes that are being posted. One thing I'm confused about is the "EGR Delete" comment. What does that mean and how is it done and why?

Thanks!

[troubles1]

is the harness the same if you buy #2#7 can you put it on #1#3#etc
2. Number 2 / 7 harness rub

Who's dealt with these?

Anyone have different issues with their LLY?

My LLY had <50K miles when I traded it and I saw the overheat condition but never the harness rub.

Has anyone fixed one of the above items on their own?[/QUOTE]

[troubles1]

any one have pics how to do ice pic trick?
\ not sure?
thanks Email thogangcc@shawbiz.ca

[drcook]

ice pick trick with pictures

http://www.dieselplace.com/forum/showthread.php?t=142114

dc

[blksmok]

any one have pics how to do ice pic trick?
\ not sure?
thanks Email thogangcc@shawbiz.ca

ice pick trick with pictures

http://www.dieselplace.com/forum/showthread.php?t=142114

dc

Not only do have the solution here, we also have the guy who originally wrote it as one of our owners. :thumb:
http://dmaxcentral.com/forum/showthread.php?t=139

[drcook]

I haven't figured out where everything is here on this site yet. Both articles are essentially one and the same, posted by the same person RickDLance. The one over on dieselplace was put up on 3-11-2007 and the one here on 5-25-2008.

Since both are the same article, I would say it is a draw :Handshake:

[otto]

New to the site and just bought an '05 3500 drw w/ lly. I don't know much about diesels and appreciate all the knowledge on this site.. The truck has 81,400 miles and looks brand new. I bought from a dealer/broker that bought from auction. It sat in his lot, I got it and it sat for a week. Got the oil and fuel filter changed since I didn't know when it was done.... Runs great except now I'm getting the rough idle and smoke only when in gear with brake on... From your posts, it sounds like I have #2/7 injector problems. What do I need to do to check if this is the problem? I will take to a Chevy dealer to check it out, but want to educate myself before hand... Thanks in advance.

[drcook]

if you could find someone with a scanner before going to the dealer, you could look for issues, and I don't mean just a simple code reader, are you anywhere close to Akron Ohio? I could scan your truck for you if you are. I have a reader that pretty much agrees with a GM Tech2. In fact, today both were hooked up to my truck and had the same readings.

[otto]

I was five years ago. Now I'm in Cincinnati..... Appreciate it though. I assume this is not a scanner Advanced Auto would carry?

[drcook]

Maybe, but you would probably wince at the price. I got mine on sale for $1200.00. Matco carries some, as well as the other mobile tool sales people. My wife took some $ out of her 401K as a loan to get the scanner so I can maintain our truck, as well as cars. Mine has domestic information up to model yr 2009.

I have seen some in the 600.00 plus range I think.

They read fuel pressure, balance rates on the injectors, coolant temp, info the trans reports, DTC codes, OBDII info etc.

a GM Tech2 scanner reads the same information as well as letting the GM techs program the modules that allow updating. My scanner is 1 way, the tech2 is 2 way.

You can slide a very small screwdriver under the release and pop the connectors off. I had to replace the harness on nbr 2 and 7 on mine. If you backtrack through this post and then follow the link about the ice pick trick, you can see what I mean about popping loose the connector. Sometimes if you pull them off and put them back on, it will work for a while and that would be the FREE way to determine if that is the issue.

Also check the wiring harness where it is ziptied to the alternator bracket. The wires can get worn through there and cause an issue. That is a common problem also

[swatkins]

New to the site and just bought an '05 3500 drw w/ lly. I don't know much about diesels and appreciate all the knowledge on this site.. The truck has 81,400 miles and looks brand new. I bought from a dealer/broker that bought from auction. It sat in his lot, I got it and it sat for a week. Got the oil and fuel filter changed since I didn't know when it was done.... Runs great except now I'm getting the rough idle and smoke only when in gear with brake on... From your posts, it sounds like I have #2/7 injector problems. What do I need to do to check if this is the problem? I will take to a Chevy dealer to check it out, but want to educate myself before hand... Thanks in advance.


I just sold my truck that was like yours....

Last week I experienced the injector harness problem for the first time. I also fixed it using Rick's How-To that your found... A simple jab with an Ice Pick saved me a lot of time and money :) The article shows you exactly how to do the repair and it takes only about 15 minutes... I spent more time finding and sharpening an Ice Pick than I spent performing the fix :)

Mine showed up a little different than yours did... I was driving home and the check engine light came on and I lost power. (The computer limits you to under 2000 rpms in an effort to prevent major damage.) The injectors sounded terrible! Sounded like a gasser with bad valves... After the "fix" I dove it for two hundred miles with no problems... Since I HATE worrying about engine problems I just traded the truck in :)

[otto]

@ drcook - I'll pass on the meter. A little too pricey for my needs. Talked to dealer today, $90 to run diagnostic (assume with that same meter). Truck is out of warranty, but dealer "implied" they may be able to "do something.." Stay tuned.....

[drcook]

that is why I said you probably would wince at the cost. for me it was worthwhile. I have been diagnosing injector issues (yes LLY's do lose injectors sometimes) and between having it scanned 2 times by a cousin before I bought my scanner, the numerous times that I have scanned my truck, including a couple days ago when I drove it to the dealership with the scanner attached, and the trips to the dealer if they weren't decent to me, and that I have 2 more months of extended warranty left, then we would have invested half the cost of the scanner at 90.00 a pop.

additionally we live in an emissions inspection county in Ohio and I was able to see that our 05 Taurus had a minor evaporative system leak prior to taking it to inspection next week.

they do have their uses and depending on a person's particular situation, can pay for themselves by not having to pay someone else's hourly labor rate

[otto]

It might be worth while down the road as I get more versed on diesels. I used to work on engines a lot more, but life got in the way somewhere along the line.... I didn't realize Akron (Summit Cty.) was still emissions testing. They stopped in Cincinnati a while ago.. Re: extended warranties... I have never had one, but I am considering it with this truck. Any recommendations on who to go through??

[drcook]

We had bought our extended warranty at time of purchase (we bought the truck new). It was a GM PP plan. We had checked into extending it, but don't have 2800.00 for 3 more years available at this time. So I am trying to get everything possibly fixed before June.

As far as other companies, I have no experience, but dealerships do have other plans they sell. Price is still a consideration though. Last year when I asked, they had quoted a price that was equivalent to the GM PP plan.

[otto]

Update on the D-max..... cut #3 wire at harness and #6 injector bad...$1000 later and all good.... Dealer did the work.. Passing on the warranty right now. Contacted Car Chex and they are just high pressure sales people.. wasn't worth the aggravation....